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Antonio SJ Musumeci 2020-11-01 00:09:37 -04:00
parent eaa2593a4b
commit d25359a95d
12 changed files with 1247 additions and 250 deletions
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3
libfuse/Makefile
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@ -43,7 +43,8 @@ SRC = \
lib/fuse_session.c \ lib/fuse_session.c \
lib/fuse_signals.c \ lib/fuse_signals.c \
lib/helper.c \ lib/helper.c \
lib/mount.c lib/mount.c \
lib/xmem.c
OBJS = $(SRC:lib/%.c=build/%.o) OBJS = $(SRC:lib/%.c=build/%.o)
DEPS = $(SRC:lib/%.c=build/%.d) DEPS = $(SRC:lib/%.c=build/%.d)
CFLAGS ?= \ CFLAGS ?= \

627
libfuse/include/khash.h Normal file
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@ -0,0 +1,627 @@
/* The MIT License
Copyright (c) 2008, 2009, 2011 by Attractive Chaos <attractor@live.co.uk>
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
/*
An example:
#include "khash.h"
KHASH_MAP_INIT_INT(32, char)
int main() {
int ret, is_missing;
khiter_t k;
khash_t(32) *h = kh_init(32);
k = kh_put(32, h, 5, &ret);
kh_value(h, k) = 10;
k = kh_get(32, h, 10);
is_missing = (k == kh_end(h));
k = kh_get(32, h, 5);
kh_del(32, h, k);
for (k = kh_begin(h); k != kh_end(h); ++k)
if (kh_exist(h, k)) kh_value(h, k) = 1;
kh_destroy(32, h);
return 0;
}
*/
/*
2013-05-02 (0.2.8):
* Use quadratic probing. When the capacity is power of 2, stepping function
i*(i+1)/2 guarantees to traverse each bucket. It is better than double
hashing on cache performance and is more robust than linear probing.
In theory, double hashing should be more robust than quadratic probing.
However, my implementation is probably not for large hash tables, because
the second hash function is closely tied to the first hash function,
which reduce the effectiveness of double hashing.
Reference: http://research.cs.vt.edu/AVresearch/hashing/quadratic.php
2011-12-29 (0.2.7):
* Minor code clean up; no actual effect.
2011-09-16 (0.2.6):
* The capacity is a power of 2. This seems to dramatically improve the
speed for simple keys. Thank Zilong Tan for the suggestion. Reference:
- http://code.google.com/p/ulib/
- http://nothings.org/computer/judy/
* Allow to optionally use linear probing which usually has better
performance for random input. Double hashing is still the default as it
is more robust to certain non-random input.
* Added Wang's integer hash function (not used by default). This hash
function is more robust to certain non-random input.
2011-02-14 (0.2.5):
* Allow to declare global functions.
2009-09-26 (0.2.4):
* Improve portability
2008-09-19 (0.2.3):
* Corrected the example
* Improved interfaces
2008-09-11 (0.2.2):
* Improved speed a little in kh_put()
2008-09-10 (0.2.1):
* Added kh_clear()
* Fixed a compiling error
2008-09-02 (0.2.0):
* Changed to token concatenation which increases flexibility.
2008-08-31 (0.1.2):
* Fixed a bug in kh_get(), which has not been tested previously.
2008-08-31 (0.1.1):
* Added destructor
*/
#ifndef __AC_KHASH_H
#define __AC_KHASH_H
/*!
@header
Generic hash table library.
*/
#define AC_VERSION_KHASH_H "0.2.8"
#include <stdlib.h>
#include <string.h>
#include <limits.h>
/* compiler specific configuration */
#if UINT_MAX == 0xffffffffu
typedef unsigned int khint32_t;
#elif ULONG_MAX == 0xffffffffu
typedef unsigned long khint32_t;
#endif
#if ULONG_MAX == ULLONG_MAX
typedef unsigned long khint64_t;
#else
typedef unsigned long long khint64_t;
#endif
#ifndef kh_inline
#ifdef _MSC_VER
#define kh_inline __inline
#else
#define kh_inline inline
#endif
#endif /* kh_inline */
#ifndef klib_unused
#if (defined __clang__ && __clang_major__ >= 3) || (defined __GNUC__ && __GNUC__ >= 3)
#define klib_unused __attribute__ ((__unused__))
#else
#define klib_unused
#endif
#endif /* klib_unused */
typedef khint32_t khint_t;
typedef khint_t khiter_t;
#define __ac_isempty(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&2)
#define __ac_isdel(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&1)
#define __ac_iseither(flag, i) ((flag[i>>4]>>((i&0xfU)<<1))&3)
#define __ac_set_isdel_false(flag, i) (flag[i>>4]&=~(1ul<<((i&0xfU)<<1)))
#define __ac_set_isempty_false(flag, i) (flag[i>>4]&=~(2ul<<((i&0xfU)<<1)))
#define __ac_set_isboth_false(flag, i) (flag[i>>4]&=~(3ul<<((i&0xfU)<<1)))
#define __ac_set_isdel_true(flag, i) (flag[i>>4]|=1ul<<((i&0xfU)<<1))
#define __ac_fsize(m) ((m) < 16? 1 : (m)>>4)
#ifndef kroundup32
#define kroundup32(x) (--(x), (x)|=(x)>>1, (x)|=(x)>>2, (x)|=(x)>>4, (x)|=(x)>>8, (x)|=(x)>>16, ++(x))
#endif
#ifndef kcalloc
#define kcalloc(N,Z) calloc(N,Z)
#endif
#ifndef kmalloc
#define kmalloc(Z) malloc(Z)
#endif
#ifndef krealloc
#define krealloc(P,Z) realloc(P,Z)
#endif
#ifndef kfree
#define kfree(P) free(P)
#endif
static const double __ac_HASH_UPPER = 0.77;
#define __KHASH_TYPE(name, khkey_t, khval_t) \
typedef struct kh_##name##_s { \
khint_t n_buckets, size, n_occupied, upper_bound; \
khint32_t *flags; \
khkey_t *keys; \
khval_t *vals; \
} kh_##name##_t;
#define __KHASH_PROTOTYPES(name, khkey_t, khval_t) \
extern kh_##name##_t *kh_init_##name(void); \
extern void kh_destroy_##name(kh_##name##_t *h); \
extern void kh_clear_##name(kh_##name##_t *h); \
extern khint_t kh_get_##name(const kh_##name##_t *h, khkey_t key); \
extern int kh_resize_##name(kh_##name##_t *h, khint_t new_n_buckets); \
extern khint_t kh_put_##name(kh_##name##_t *h, khkey_t key, int *ret); \
extern void kh_del_##name(kh_##name##_t *h, khint_t x);
#define __KHASH_IMPL(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
SCOPE kh_##name##_t *kh_init_##name(void) { \
return (kh_##name##_t*)kcalloc(1, sizeof(kh_##name##_t)); \
} \
SCOPE void kh_destroy_##name(kh_##name##_t *h) \
{ \
if (h) { \
kfree((void *)h->keys); kfree(h->flags); \
kfree((void *)h->vals); \
kfree(h); \
} \
} \
SCOPE void kh_clear_##name(kh_##name##_t *h) \
{ \
if (h && h->flags) { \
memset(h->flags, 0xaa, __ac_fsize(h->n_buckets) * sizeof(khint32_t)); \
h->size = h->n_occupied = 0; \
} \
} \
SCOPE khint_t kh_get_##name(const kh_##name##_t *h, khkey_t key) \
{ \
if (h->n_buckets) { \
khint_t k, i, last, mask, step = 0; \
mask = h->n_buckets - 1; \
k = __hash_func(key); i = k & mask; \
last = i; \
while (!__ac_isempty(h->flags, i) && (__ac_isdel(h->flags, i) || !__hash_equal(h->keys[i], key))) { \
i = (i + (++step)) & mask; \
if (i == last) return h->n_buckets; \
} \
return __ac_iseither(h->flags, i)? h->n_buckets : i; \
} else return 0; \
} \
SCOPE int kh_resize_##name(kh_##name##_t *h, khint_t new_n_buckets) \
{ /* This function uses 0.25*n_buckets bytes of working space instead of [sizeof(key_t+val_t)+.25]*n_buckets. */ \
khint32_t *new_flags = 0; \
khint_t j = 1; \
{ \
kroundup32(new_n_buckets); \
if (new_n_buckets < 4) new_n_buckets = 4; \
if (h->size >= (khint_t)(new_n_buckets * __ac_HASH_UPPER + 0.5)) j = 0; /* requested size is too small */ \
else { /* hash table size to be changed (shrink or expand); rehash */ \
new_flags = (khint32_t*)kmalloc(__ac_fsize(new_n_buckets) * sizeof(khint32_t)); \
if (!new_flags) return -1; \
memset(new_flags, 0xaa, __ac_fsize(new_n_buckets) * sizeof(khint32_t)); \
if (h->n_buckets < new_n_buckets) { /* expand */ \
khkey_t *new_keys = (khkey_t*)krealloc((void *)h->keys, new_n_buckets * sizeof(khkey_t)); \
if (!new_keys) { kfree(new_flags); return -1; } \
h->keys = new_keys; \
if (kh_is_map) { \
khval_t *new_vals = (khval_t*)krealloc((void *)h->vals, new_n_buckets * sizeof(khval_t)); \
if (!new_vals) { kfree(new_flags); return -1; } \
h->vals = new_vals; \
} \
} /* otherwise shrink */ \
} \
} \
if (j) { /* rehashing is needed */ \
for (j = 0; j != h->n_buckets; ++j) { \
if (__ac_iseither(h->flags, j) == 0) { \
khkey_t key = h->keys[j]; \
khval_t val; \
khint_t new_mask; \
new_mask = new_n_buckets - 1; \
if (kh_is_map) val = h->vals[j]; \
__ac_set_isdel_true(h->flags, j); \
while (1) { /* kick-out process; sort of like in Cuckoo hashing */ \
khint_t k, i, step = 0; \
k = __hash_func(key); \
i = k & new_mask; \
while (!__ac_isempty(new_flags, i)) i = (i + (++step)) & new_mask; \
__ac_set_isempty_false(new_flags, i); \
if (i < h->n_buckets && __ac_iseither(h->flags, i) == 0) { /* kick out the existing element */ \
{ khkey_t tmp = h->keys[i]; h->keys[i] = key; key = tmp; } \
if (kh_is_map) { khval_t tmp = h->vals[i]; h->vals[i] = val; val = tmp; } \
__ac_set_isdel_true(h->flags, i); /* mark it as deleted in the old hash table */ \
} else { /* write the element and jump out of the loop */ \
h->keys[i] = key; \
if (kh_is_map) h->vals[i] = val; \
break; \
} \
} \
} \
} \
if (h->n_buckets > new_n_buckets) { /* shrink the hash table */ \
h->keys = (khkey_t*)krealloc((void *)h->keys, new_n_buckets * sizeof(khkey_t)); \
if (kh_is_map) h->vals = (khval_t*)krealloc((void *)h->vals, new_n_buckets * sizeof(khval_t)); \
} \
kfree(h->flags); /* free the working space */ \
h->flags = new_flags; \
h->n_buckets = new_n_buckets; \
h->n_occupied = h->size; \
h->upper_bound = (khint_t)(h->n_buckets * __ac_HASH_UPPER + 0.5); \
} \
return 0; \
} \
SCOPE khint_t kh_put_##name(kh_##name##_t *h, khkey_t key, int *ret) \
{ \
khint_t x; \
if (h->n_occupied >= h->upper_bound) { /* update the hash table */ \
if (h->n_buckets > (h->size<<1)) { \
if (kh_resize_##name(h, h->n_buckets - 1) < 0) { /* clear "deleted" elements */ \
*ret = -1; return h->n_buckets; \
} \
} else if (kh_resize_##name(h, h->n_buckets + 1) < 0) { /* expand the hash table */ \
*ret = -1; return h->n_buckets; \
} \
} /* TODO: to implement automatically shrinking; resize() already support shrinking */ \
{ \
khint_t k, i, site, last, mask = h->n_buckets - 1, step = 0; \
x = site = h->n_buckets; k = __hash_func(key); i = k & mask; \
if (__ac_isempty(h->flags, i)) x = i; /* for speed up */ \
else { \
last = i; \
while (!__ac_isempty(h->flags, i) && (__ac_isdel(h->flags, i) || !__hash_equal(h->keys[i], key))) { \
if (__ac_isdel(h->flags, i)) site = i; \
i = (i + (++step)) & mask; \
if (i == last) { x = site; break; } \
} \
if (x == h->n_buckets) { \
if (__ac_isempty(h->flags, i) && site != h->n_buckets) x = site; \
else x = i; \
} \
} \
} \
if (__ac_isempty(h->flags, x)) { /* not present at all */ \
h->keys[x] = key; \
__ac_set_isboth_false(h->flags, x); \
++h->size; ++h->n_occupied; \
*ret = 1; \
} else if (__ac_isdel(h->flags, x)) { /* deleted */ \
h->keys[x] = key; \
__ac_set_isboth_false(h->flags, x); \
++h->size; \
*ret = 2; \
} else *ret = 0; /* Don't touch h->keys[x] if present and not deleted */ \
return x; \
} \
SCOPE void kh_del_##name(kh_##name##_t *h, khint_t x) \
{ \
if (x != h->n_buckets && !__ac_iseither(h->flags, x)) { \
__ac_set_isdel_true(h->flags, x); \
--h->size; \
} \
}
#define KHASH_DECLARE(name, khkey_t, khval_t) \
__KHASH_TYPE(name, khkey_t, khval_t) \
__KHASH_PROTOTYPES(name, khkey_t, khval_t)
#define KHASH_INIT2(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
__KHASH_TYPE(name, khkey_t, khval_t) \
__KHASH_IMPL(name, SCOPE, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal)
#define KHASH_INIT(name, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal) \
KHASH_INIT2(name, static kh_inline klib_unused, khkey_t, khval_t, kh_is_map, __hash_func, __hash_equal)
/* --- BEGIN OF HASH FUNCTIONS --- */
/*! @function
@abstract Integer hash function
@param key The integer [khint32_t]
@return The hash value [khint_t]
*/
#define kh_int_hash_func(key) (khint32_t)(key)
/*! @function
@abstract Integer comparison function
*/
#define kh_int_hash_equal(a, b) ((a) == (b))
/*! @function
@abstract 64-bit integer hash function
@param key The integer [khint64_t]
@return The hash value [khint_t]
*/
#define kh_int64_hash_func(key) (khint32_t)((key)>>33^(key)^(key)<<11)
/*! @function
@abstract 64-bit integer comparison function
*/
#define kh_int64_hash_equal(a, b) ((a) == (b))
/*! @function
@abstract const char* hash function
@param s Pointer to a null terminated string
@return The hash value
*/
static kh_inline khint_t __ac_X31_hash_string(const char *s)
{
khint_t h = (khint_t)*s;
if (h) for (++s ; *s; ++s) h = (h << 5) - h + (khint_t)*s;
return h;
}
/*! @function
@abstract Another interface to const char* hash function
@param key Pointer to a null terminated string [const char*]
@return The hash value [khint_t]
*/
#define kh_str_hash_func(key) __ac_X31_hash_string(key)
/*! @function
@abstract Const char* comparison function
*/
#define kh_str_hash_equal(a, b) (strcmp(a, b) == 0)
static kh_inline khint_t __ac_Wang_hash(khint_t key)
{
key += ~(key << 15);
key ^= (key >> 10);
key += (key << 3);
key ^= (key >> 6);
key += ~(key << 11);
key ^= (key >> 16);
return key;
}
#define kh_int_hash_func2(key) __ac_Wang_hash((khint_t)key)
/* --- END OF HASH FUNCTIONS --- */
/* Other convenient macros... */
/*!
@abstract Type of the hash table.
@param name Name of the hash table [symbol]
*/
#define khash_t(name) kh_##name##_t
/*! @function
@abstract Initiate a hash table.
@param name Name of the hash table [symbol]
@return Pointer to the hash table [khash_t(name)*]
*/
#define kh_init(name) kh_init_##name()
/*! @function
@abstract Destroy a hash table.
@param name Name of the hash table [symbol]
@param h Pointer to the hash table [khash_t(name)*]
*/
#define kh_destroy(name, h) kh_destroy_##name(h)
/*! @function
@abstract Reset a hash table without deallocating memory.
@param name Name of the hash table [symbol]
@param h Pointer to the hash table [khash_t(name)*]
*/
#define kh_clear(name, h) kh_clear_##name(h)
/*! @function
@abstract Resize a hash table.
@param name Name of the hash table [symbol]
@param h Pointer to the hash table [khash_t(name)*]
@param s New size [khint_t]
*/
#define kh_resize(name, h, s) kh_resize_##name(h, s)
/*! @function
@abstract Insert a key to the hash table.
@param name Name of the hash table [symbol]
@param h Pointer to the hash table [khash_t(name)*]
@param k Key [type of keys]
@param r Extra return code: -1 if the operation failed;
0 if the key is present in the hash table;
1 if the bucket is empty (never used); 2 if the element in
the bucket has been deleted [int*]
@return Iterator to the inserted element [khint_t]
*/
#define kh_put(name, h, k, r) kh_put_##name(h, k, r)
/*! @function
@abstract Retrieve a key from the hash table.
@param name Name of the hash table [symbol]
@param h Pointer to the hash table [khash_t(name)*]
@param k Key [type of keys]
@return Iterator to the found element, or kh_end(h) if the element is absent [khint_t]
*/
#define kh_get(name, h, k) kh_get_##name(h, k)
/*! @function
@abstract Remove a key from the hash table.
@param name Name of the hash table [symbol]
@param h Pointer to the hash table [khash_t(name)*]
@param k Iterator to the element to be deleted [khint_t]
*/
#define kh_del(name, h, k) kh_del_##name(h, k)
/*! @function
@abstract Test whether a bucket contains data.
@param h Pointer to the hash table [khash_t(name)*]
@param x Iterator to the bucket [khint_t]
@return 1 if containing data; 0 otherwise [int]
*/
#define kh_exist(h, x) (!__ac_iseither((h)->flags, (x)))
/*! @function
@abstract Get key given an iterator
@param h Pointer to the hash table [khash_t(name)*]
@param x Iterator to the bucket [khint_t]
@return Key [type of keys]
*/
#define kh_key(h, x) ((h)->keys[x])
/*! @function
@abstract Get value given an iterator
@param h Pointer to the hash table [khash_t(name)*]
@param x Iterator to the bucket [khint_t]
@return Value [type of values]
@discussion For hash sets, calling this results in segfault.
*/
#define kh_val(h, x) ((h)->vals[x])
/*! @function
@abstract Alias of kh_val()
*/
#define kh_value(h, x) ((h)->vals[x])
/*! @function
@abstract Get the start iterator
@param h Pointer to the hash table [khash_t(name)*]
@return The start iterator [khint_t]
*/
#define kh_begin(h) (khint_t)(0)
/*! @function
@abstract Get the end iterator
@param h Pointer to the hash table [khash_t(name)*]
@return The end iterator [khint_t]
*/
#define kh_end(h) ((h)->n_buckets)
/*! @function
@abstract Get the number of elements in the hash table
@param h Pointer to the hash table [khash_t(name)*]
@return Number of elements in the hash table [khint_t]
*/
#define kh_size(h) ((h)->size)
/*! @function
@abstract Get the number of buckets in the hash table
@param h Pointer to the hash table [khash_t(name)*]
@return Number of buckets in the hash table [khint_t]
*/
#define kh_n_buckets(h) ((h)->n_buckets)
/*! @function
@abstract Iterate over the entries in the hash table
@param h Pointer to the hash table [khash_t(name)*]
@param kvar Variable to which key will be assigned
@param vvar Variable to which value will be assigned
@param code Block of code to execute
*/
#define kh_foreach(h, kvar, vvar, code) { khint_t __i; \
for (__i = kh_begin(h); __i != kh_end(h); ++__i) { \
if (!kh_exist(h,__i)) continue; \
(kvar) = kh_key(h,__i); \
(vvar) = kh_val(h,__i); \
code; \
} }
/*! @function
@abstract Iterate over the values in the hash table
@param h Pointer to the hash table [khash_t(name)*]
@param vvar Variable to which value will be assigned
@param code Block of code to execute
*/
#define kh_foreach_value(h, vvar, code) { khint_t __i; \
for (__i = kh_begin(h); __i != kh_end(h); ++__i) { \
if (!kh_exist(h,__i)) continue; \
(vvar) = kh_val(h,__i); \
code; \
} }
/* More convenient interfaces */
/*! @function
@abstract Instantiate a hash set containing integer keys
@param name Name of the hash table [symbol]
*/
#define KHASH_SET_INIT_INT(name) \
KHASH_INIT(name, khint32_t, char, 0, kh_int_hash_func, kh_int_hash_equal)
/*! @function
@abstract Instantiate a hash map containing integer keys
@param name Name of the hash table [symbol]
@param khval_t Type of values [type]
*/
#define KHASH_MAP_INIT_INT(name, khval_t) \
KHASH_INIT(name, khint32_t, khval_t, 1, kh_int_hash_func, kh_int_hash_equal)
/*! @function
@abstract Instantiate a hash set containing 64-bit integer keys
@param name Name of the hash table [symbol]
*/
#define KHASH_SET_INIT_INT64(name) \
KHASH_INIT(name, khint64_t, char, 0, kh_int64_hash_func, kh_int64_hash_equal)
/*! @function
@abstract Instantiate a hash map containing 64-bit integer keys
@param name Name of the hash table [symbol]
@param khval_t Type of values [type]
*/
#define KHASH_MAP_INIT_INT64(name, khval_t) \
KHASH_INIT(name, khint64_t, khval_t, 1, kh_int64_hash_func, kh_int64_hash_equal)
typedef const char *kh_cstr_t;
/*! @function
@abstract Instantiate a hash map containing const char* keys
@param name Name of the hash table [symbol]
*/
#define KHASH_SET_INIT_STR(name) \
KHASH_INIT(name, kh_cstr_t, char, 0, kh_str_hash_func, kh_str_hash_equal)
/*! @function
@abstract Instantiate a hash map containing const char* keys
@param name Name of the hash table [symbol]
@param khval_t Type of values [type]
*/
#define KHASH_MAP_INIT_STR(name, khval_t) \
KHASH_INIT(name, kh_cstr_t, khval_t, 1, kh_str_hash_func, kh_str_hash_equal)
#endif /* __AC_KHASH_H */

46
libfuse/include/xmem.h Normal file
View File

@ -0,0 +1,46 @@
/*
ISC License
Copyright (c) 2020, Antonio SJ Musumeci <trapexit@spawn.link>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#pragma once
#include "extern_c.h"
#include <stdio.h>
#include <stdlib.h>
EXTERN_C_BEGIN
void xmem_enable(void);
void xmem_disable(void);
void *xmem_malloc_(size_t size, const char *file, const int line);
void *xmem_realloc_(void *ptr, size_t size, const char *file, const int line);
void *xmem_calloc_(size_t nmemb, size_t size, const char *file, const int line);
void xmem_free_(void *ptr, const char *file, const int line);
char *xmem_strdup_(const char *s, const char *file, const int line);
void xmem_print(FILE *file);
void xmem_print_to_tmp(void);
#define xmem_malloc(SIZE) (xmem_malloc_((SIZE),__FILE__,__LINE__))
#define xmem_realloc(PTR,SIZE) (xmem_realloc_((PTR),(SIZE),__FILE__,__LINE__))
#define xmem_calloc(NMEMB,SIZE) (xmem_calloc_((NMEMB),(SIZE),__FILE__,__LINE__))
#define xmem_free(PTR) (xmem_free_((PTR),__FILE__,__LINE__))
#define xmem_strdup(STR) (xmem_strdup_((STR),__FILE__,__LINE__))
EXTERN_C_END

275
libfuse/lib/fuse.c
View File

@ -17,6 +17,7 @@
#include "fuse_misc.h" #include "fuse_misc.h"
#include "fuse_kernel.h" #include "fuse_kernel.h"
#include "fuse_dirents.h" #include "fuse_dirents.h"
#include "xmem.h"
#include <assert.h> #include <assert.h>
#include <dlfcn.h> #include <dlfcn.h>
@ -39,12 +40,6 @@
#include <time.h> #include <time.h>
#include <unistd.h> #include <unistd.h>
#define FUSE_NODE_SLAB 1
#ifndef MAP_ANONYMOUS
#undef FUSE_NODE_SLAB
#endif
#define FUSE_DEFAULT_INTR_SIGNAL SIGUSR1 #define FUSE_DEFAULT_INTR_SIGNAL SIGUSR1
#define FUSE_UNKNOWN_INO UINT64_MAX #define FUSE_UNKNOWN_INO UINT64_MAX
@ -256,6 +251,43 @@ list_del(struct list_head *entry)
prev->next = next; prev->next = next;
} }
static
void
fuse_print_table(struct fuse *f_)
{
FILE *f;
size_t i;
char filepath[256];
sprintf(filepath,"/tmp/mergerfs.nodes.%d.%ld",getpid(),time(NULL));
f = fopen(filepath,"w+");
if(f == NULL)
f = stderr;
pthread_mutex_lock(&f_->lock);
for(i = 0; i < f_->id_table.size; i++)
{
struct node *node;
for(node = f_->id_table.array[i]; node != NULL; node = node->id_next)
{
fprintf(f,
"id:%lu; pid:%lu; ref:%d; %s\n",
node->nodeid,
(node->parent ? node->parent->nodeid : 0),
node->refctr,
node->name);
}
}
pthread_mutex_unlock(&f_->lock);
if(f != stderr)
{
fprintf(stderr,"%s\n",filepath);
fclose(f);
}
}
static static
inline inline
int int
@ -282,118 +314,11 @@ get_node_size(struct fuse *f)
return sizeof(struct node); return sizeof(struct node);
} }
#ifdef FUSE_NODE_SLAB
static
struct node_slab*
list_to_slab(struct list_head *head)
{
return (struct node_slab *) head;
}
static
struct node_slab*
node_to_slab(struct fuse *f, struct node *node)
{
return (struct node_slab *) (((uintptr_t) node) & ~((uintptr_t) f->pagesize - 1));
}
static
int
alloc_slab(struct fuse *f)
{
void *mem;
struct node_slab *slab;
char *start;
size_t num;
size_t i;
size_t node_size = get_node_size(f);
mem = mmap(NULL, f->pagesize, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (mem == MAP_FAILED)
return -1;
slab = mem;
init_list_head(&slab->freelist);
slab->used = 0;
num = (f->pagesize - sizeof(struct node_slab)) / node_size;
start = (char *) mem + f->pagesize - num * node_size;
for (i = 0; i < num; i++) {
struct list_head *n;
n = (struct list_head *) (start + i * node_size);
list_add_tail(n, &slab->freelist);
}
list_add_tail(&slab->list, &f->partial_slabs);
return 0;
}
static static
struct node* struct node*
alloc_node(struct fuse *f) alloc_node(struct fuse *f)
{ {
struct node_slab *slab; return (struct node *)xmem_calloc(1, get_node_size(f));
struct list_head *node;
if (list_empty(&f->partial_slabs)) {
int res = alloc_slab(f);
if (res != 0)
return NULL;
}
slab = list_to_slab(f->partial_slabs.next);
slab->used++;
node = slab->freelist.next;
list_del(node);
if (list_empty(&slab->freelist)) {
list_del(&slab->list);
list_add_tail(&slab->list, &f->full_slabs);
}
memset(node, 0, sizeof(struct node));
return (struct node *) node;
}
static
void
free_slab(struct fuse *f,
struct node_slab *slab)
{
int res;
list_del(&slab->list);
res = munmap(slab, f->pagesize);
if (res == -1)
fprintf(stderr, "fuse warning: munmap(%p) failed\n", slab);
}
static
void
free_node_mem(struct fuse *f,
struct node *node)
{
struct node_slab *slab = node_to_slab(f, node);
struct list_head *n = (struct list_head *) node;
slab->used--;
if (slab->used) {
if (list_empty(&slab->freelist)) {
list_del(&slab->list);
list_add_tail(&slab->list, &f->partial_slabs);
}
list_add_head(n, &slab->freelist);
} else {
free_slab(f, slab);
}
}
#else
static
struct node*
alloc_node(struct fuse *f)
{
return (struct node *) calloc(1, get_node_size(f));
} }
static static
@ -402,9 +327,8 @@ free_node_mem(struct fuse *f,
struct node *node) struct node *node)
{ {
(void) f; (void) f;
free(node); xmem_free(node);
} }
#endif
static static
size_t size_t
@ -483,7 +407,7 @@ free_node(struct fuse *f_,
struct node *node_) struct node *node_)
{ {
if(node_->name != node_->inline_name) if(node_->name != node_->inline_name)
free(node_->name); xmem_free(node_->name);
if(node_->is_hidden) if(node_->is_hidden)
fuse_fs_free_hide(f_->fs,node_->hidden_fh); fuse_fs_free_hide(f_->fs,node_->hidden_fh);
@ -501,7 +425,7 @@ node_table_reduce(struct node_table *t)
if (newsize < NODE_TABLE_MIN_SIZE) if (newsize < NODE_TABLE_MIN_SIZE)
return; return;
newarray = realloc(t->array, sizeof(struct node *) * newsize); newarray = xmem_realloc(t->array, sizeof(struct node *) * newsize);
if (newarray != NULL) if (newarray != NULL)
t->array = newarray; t->array = newarray;
@ -559,7 +483,7 @@ static int node_table_resize(struct node_table *t)
size_t newsize = t->size * 2; size_t newsize = t->size * 2;
void *newarray; void *newarray;
newarray = realloc(t->array, sizeof(struct node *) * newsize); newarray = xmem_realloc(t->array, sizeof(struct node *) * newsize);
if (newarray == NULL) if (newarray == NULL)
return -1; return -1;
@ -668,7 +592,7 @@ static void unhash_name(struct fuse *f, struct node *node)
node->name_next = NULL; node->name_next = NULL;
unref_node(f, node->parent); unref_node(f, node->parent);
if (node->name != node->inline_name) if (node->name != node->inline_name)
free(node->name); xmem_free(node->name);
node->name = NULL; node->name = NULL;
node->parent = NULL; node->parent = NULL;
f->name_table.use--; f->name_table.use--;
@ -866,7 +790,7 @@ static char *add_name(char **buf, unsigned *bufsize, char *s, const char *name)
newbufsize *= 2; newbufsize *= 2;
} }
newbuf = realloc(*buf, newbufsize); newbuf = xmem_realloc(*buf, newbufsize);
if (newbuf == NULL) if (newbuf == NULL)
return NULL; return NULL;
@ -917,7 +841,7 @@ static int try_get_path(struct fuse *f, fuse_ino_t nodeid, const char *name,
*path = NULL; *path = NULL;
err = -ENOMEM; err = -ENOMEM;
buf = malloc(bufsize); buf = xmem_malloc(bufsize);
if (buf == NULL) if (buf == NULL)
goto out_err; goto out_err;
@ -980,7 +904,7 @@ static int try_get_path(struct fuse *f, fuse_ino_t nodeid, const char *name,
if (need_lock) if (need_lock)
unlock_path(f, nodeid, wnode, node); unlock_path(f, nodeid, wnode, node);
out_free: out_free:
free(buf); xmem_free(buf);
out_err: out_err:
return err; return err;
@ -1172,7 +1096,7 @@ static int try_get_path2(struct fuse *f, fuse_ino_t nodeid1, const char *name1,
struct node *wn1 = wnode1 ? *wnode1 : NULL; struct node *wn1 = wnode1 ? *wnode1 : NULL;
unlock_path(f, nodeid1, wn1, NULL); unlock_path(f, nodeid1, wn1, NULL);
free(*path1); xmem_free(*path1);
} }
} }
return err; return err;
@ -1219,7 +1143,7 @@ static void free_path_wrlock(struct fuse *f, fuse_ino_t nodeid,
if (f->lockq) if (f->lockq)
wake_up_queued(f); wake_up_queued(f);
pthread_mutex_unlock(&f->lock); pthread_mutex_unlock(&f->lock);
free(path); xmem_free(path);
} }
static void free_path(struct fuse *f, fuse_ino_t nodeid, char *path) static void free_path(struct fuse *f, fuse_ino_t nodeid, char *path)
@ -1237,8 +1161,8 @@ static void free_path2(struct fuse *f, fuse_ino_t nodeid1, fuse_ino_t nodeid2,
unlock_path(f, nodeid2, wnode2, NULL); unlock_path(f, nodeid2, wnode2, NULL);
wake_up_queued(f); wake_up_queued(f);
pthread_mutex_unlock(&f->lock); pthread_mutex_unlock(&f->lock);
free(path1); xmem_free(path1);
free(path2); xmem_free(path2);
} }
static static
@ -1316,15 +1240,14 @@ static int rename_node(struct fuse *f, fuse_ino_t olddir, const char *oldname,
int err = 0; int err = 0;
pthread_mutex_lock(&f->lock); pthread_mutex_lock(&f->lock);
node = lookup_node(f, olddir, oldname); node = lookup_node(f, olddir, oldname);
newnode = lookup_node(f, newdir, newname); newnode = lookup_node(f, newdir, newname);
if (node == NULL) if (node == NULL)
goto out; goto out;
if (newnode != NULL) if (newnode != NULL)
unlink_node(f, newnode); unlink_node(f, newnode);
unhash_name(f, node); unhash_name(f, node);
if (hash_name(f, node, newdir, newname) == -1) { if (hash_name(f, node, newdir, newname) == -1) {
err = -ENOMEM; err = -ENOMEM;
@ -1612,8 +1535,8 @@ static void fuse_free_buf(struct fuse_bufvec *buf)
size_t i; size_t i;
for (i = 0; i < buf->count; i++) for (i = 0; i < buf->count; i++)
free(buf->buf[i].mem); xmem_free(buf->buf[i].mem);
free(buf); xmem_free(buf);
} }
} }
@ -1637,13 +1560,13 @@ int fuse_fs_read_buf(struct fuse_fs *fs,
struct fuse_bufvec *buf; struct fuse_bufvec *buf;
void *mem; void *mem;
buf = malloc(sizeof(struct fuse_bufvec)); buf = xmem_malloc(sizeof(struct fuse_bufvec));
if (buf == NULL) if (buf == NULL)
return -ENOMEM; return -ENOMEM;
mem = malloc(size); mem = xmem_malloc(size);
if (mem == NULL) { if (mem == NULL) {
free(buf); xmem_free(buf);
return -ENOMEM; return -ENOMEM;
} }
*buf = FUSE_BUFVEC_INIT(size); *buf = FUSE_BUFVEC_INIT(size);
@ -1721,7 +1644,7 @@ int fuse_fs_write_buf(struct fuse_fs *fs,
flatbuf = &buf->buf[0]; flatbuf = &buf->buf[0];
} else { } else {
res = -ENOMEM; res = -ENOMEM;
mem = malloc(size); mem = xmem_malloc(size);
if (mem == NULL) if (mem == NULL)
goto out; goto out;
@ -1737,7 +1660,7 @@ int fuse_fs_write_buf(struct fuse_fs *fs,
res = fs->op.write(flatbuf->mem, flatbuf->size, res = fs->op.write(flatbuf->mem, flatbuf->size,
off, fi); off, fi);
out_free: out_free:
free(mem); xmem_free(mem);
} }
out: out:
if (fs->debug && res >= 0) if (fs->debug && res >= 0)
@ -2335,7 +2258,7 @@ static struct fuse_context_i *fuse_get_context_internal(void)
c = (struct fuse_context_i *) pthread_getspecific(fuse_context_key); c = (struct fuse_context_i *) pthread_getspecific(fuse_context_key);
if (c == NULL) { if (c == NULL) {
c = (struct fuse_context_i *) c = (struct fuse_context_i *)
calloc(1, sizeof(struct fuse_context_i)); xmem_calloc(1, sizeof(struct fuse_context_i));
if (c == NULL) { if (c == NULL) {
/* This is hard to deal with properly, so just /* This is hard to deal with properly, so just
abort. If memory is so low that the abort. If memory is so low that the
@ -2351,7 +2274,7 @@ static struct fuse_context_i *fuse_get_context_internal(void)
static void fuse_freecontext(void *data) static void fuse_freecontext(void *data)
{ {
free(data); xmem_free(data);
} }
static int fuse_create_context_key(void) static int fuse_create_context_key(void)
@ -2377,7 +2300,7 @@ static void fuse_delete_context_key(void)
pthread_mutex_lock(&fuse_context_lock); pthread_mutex_lock(&fuse_context_lock);
fuse_context_ref--; fuse_context_ref--;
if (!fuse_context_ref) { if (!fuse_context_ref) {
free(pthread_getspecific(fuse_context_key)); xmem_free(pthread_getspecific(fuse_context_key));
pthread_key_delete(fuse_context_key); pthread_key_delete(fuse_context_key);
} }
pthread_mutex_unlock(&fuse_context_lock); pthread_mutex_unlock(&fuse_context_lock);
@ -2445,7 +2368,7 @@ void fuse_fs_destroy(struct fuse_fs *fs)
fuse_get_context()->private_data = fs->user_data; fuse_get_context()->private_data = fs->user_data;
if (fs->op.destroy) if (fs->op.destroy)
fs->op.destroy(fs->user_data); fs->op.destroy(fs->user_data);
free(fs); xmem_free(fs);
} }
static void fuse_lib_destroy(void *data) static void fuse_lib_destroy(void *data)
@ -3258,7 +3181,7 @@ static void fuse_lib_opendir(fuse_req_t req, fuse_ino_t ino,
char *path; char *path;
int err; int err;
dh = (struct fuse_dh *) calloc(1,sizeof(struct fuse_dh)); dh = (struct fuse_dh *)xmem_calloc(1,sizeof(struct fuse_dh));
if (dh == NULL) { if (dh == NULL) {
reply_err(req, -ENOMEM); reply_err(req, -ENOMEM);
return; return;
@ -3288,12 +3211,12 @@ static void fuse_lib_opendir(fuse_req_t req, fuse_ino_t ino,
must be cancelled */ must be cancelled */
fuse_fs_releasedir(f->fs, &fi); fuse_fs_releasedir(f->fs, &fi);
pthread_mutex_destroy(&dh->lock); pthread_mutex_destroy(&dh->lock);
free(dh); xmem_free(dh);
} }
} else { } else {
reply_err(req, err); reply_err(req, err);
pthread_mutex_destroy(&dh->lock); pthread_mutex_destroy(&dh->lock);
free(dh); xmem_free(dh);
} }
free_path(f, ino, path); free_path(f, ino, path);
} }
@ -3456,7 +3379,7 @@ fuse_lib_releasedir(fuse_req_t req_,
pthread_mutex_unlock(&dh->lock); pthread_mutex_unlock(&dh->lock);
pthread_mutex_destroy(&dh->lock); pthread_mutex_destroy(&dh->lock);
fuse_dirents_free(&dh->d); fuse_dirents_free(&dh->d);
free(dh); xmem_free(dh);
reply_err(req_,0); reply_err(req_,0);
} }
@ -3544,7 +3467,7 @@ static void fuse_lib_getxattr(fuse_req_t req, fuse_ino_t ino, const char *name,
int res; int res;
if (size) { if (size) {
char *value = (char *) malloc(size); char *value = (char*)xmem_malloc(size);
if (value == NULL) { if (value == NULL) {
reply_err(req, -ENOMEM); reply_err(req, -ENOMEM);
return; return;
@ -3554,7 +3477,7 @@ static void fuse_lib_getxattr(fuse_req_t req, fuse_ino_t ino, const char *name,
fuse_reply_buf(req, value, res); fuse_reply_buf(req, value, res);
else else
reply_err(req, res); reply_err(req, res);
free(value); xmem_free(value);
} else { } else {
res = common_getxattr(f, req, ino, name, NULL, 0); res = common_getxattr(f, req, ino, name, NULL, 0);
if (res >= 0) if (res >= 0)
@ -3587,7 +3510,7 @@ static void fuse_lib_listxattr(fuse_req_t req, fuse_ino_t ino, size_t size)
int res; int res;
if (size) { if (size) {
char *list = (char *) malloc(size); char *list = (char*)xmem_malloc(size);
if (list == NULL) { if (list == NULL) {
reply_err(req, -ENOMEM); reply_err(req, -ENOMEM);
return; return;
@ -3597,7 +3520,7 @@ static void fuse_lib_listxattr(fuse_req_t req, fuse_ino_t ino, size_t size)
fuse_reply_buf(req, list, res); fuse_reply_buf(req, list, res);
else else
reply_err(req, res); reply_err(req, res);
free(list); xmem_free(list);
} else { } else {
res = common_listxattr(f, req, ino, NULL, 0); res = common_listxattr(f, req, ino, NULL, 0);
if (res >= 0) if (res >= 0)
@ -3678,7 +3601,7 @@ static void delete_lock(struct lock **lockp)
{ {
struct lock *l = *lockp; struct lock *l = *lockp;
*lockp = l->next; *lockp = l->next;
free(l); xmem_free(l);
} }
static void insert_lock(struct lock **pos, struct lock *lock) static void insert_lock(struct lock **pos, struct lock *lock)
@ -3695,12 +3618,12 @@ static int locks_insert(struct node *node, struct lock *lock)
if (lock->type != F_UNLCK || lock->start != 0 || if (lock->type != F_UNLCK || lock->start != 0 ||
lock->end != OFFSET_MAX) { lock->end != OFFSET_MAX) {
newl1 = malloc(sizeof(struct lock)); newl1 = xmem_malloc(sizeof(struct lock));
newl2 = malloc(sizeof(struct lock)); newl2 = xmem_malloc(sizeof(struct lock));
if (!newl1 || !newl2) { if (!newl1 || !newl2) {
free(newl1); xmem_free(newl1);
free(newl2); xmem_free(newl2);
return -ENOLCK; return -ENOLCK;
} }
} }
@ -3756,8 +3679,8 @@ static int locks_insert(struct node *node, struct lock *lock)
newl1 = NULL; newl1 = NULL;
} }
out: out:
free(newl1); xmem_free(newl1);
free(newl2); xmem_free(newl2);
return 0; return 0;
} }
@ -3960,7 +3883,7 @@ static void fuse_lib_ioctl(fuse_req_t req, fuse_ino_t ino, unsigned long cmd, vo
if (out_bufsz) { if (out_bufsz) {
err = -ENOMEM; err = -ENOMEM;
out_buf = malloc(out_bufsz); out_buf = xmem_malloc(out_bufsz);
if (!out_buf) if (!out_buf)
goto err; goto err;
} }
@ -3976,12 +3899,18 @@ static void fuse_lib_ioctl(fuse_req_t req, fuse_ino_t ino, unsigned long cmd, vo
fuse_finish_interrupt(f, req, &d); fuse_finish_interrupt(f, req, &d);
if(err == -0xDEADBEEF)
{
fuse_print_table(f);
err = 0;
}
fuse_reply_ioctl(req, err, out_buf, out_bufsz); fuse_reply_ioctl(req, err, out_buf, out_bufsz);
goto out; goto out;
err: err:
reply_err(req, err); reply_err(req, err);
out: out:
free(out_buf); xmem_free(out_buf);
} }
static void fuse_lib_poll(fuse_req_t req, fuse_ino_t ino, static void fuse_lib_poll(fuse_req_t req, fuse_ino_t ino,
@ -4122,8 +4051,8 @@ int fuse_notify_poll(struct fuse_pollhandle *ph)
static void free_cmd(struct fuse_cmd *cmd) static void free_cmd(struct fuse_cmd *cmd)
{ {
free(cmd->buf); xmem_free(cmd->buf);
free(cmd); xmem_free(cmd);
} }
void fuse_process_cmd(struct fuse *f, struct fuse_cmd *cmd) void fuse_process_cmd(struct fuse *f, struct fuse_cmd *cmd)
@ -4144,15 +4073,15 @@ struct fuse_session *fuse_get_session(struct fuse *f)
static struct fuse_cmd *fuse_alloc_cmd(size_t bufsize) static struct fuse_cmd *fuse_alloc_cmd(size_t bufsize)
{ {
struct fuse_cmd *cmd = (struct fuse_cmd *) malloc(sizeof(*cmd)); struct fuse_cmd *cmd = (struct fuse_cmd *)xmem_malloc(sizeof(*cmd));
if (cmd == NULL) { if (cmd == NULL) {
fprintf(stderr, "fuse: failed to allocate cmd\n"); fprintf(stderr, "fuse: failed to allocate cmd\n");
return NULL; return NULL;
} }
cmd->buf = (char *) malloc(bufsize); cmd->buf = (char*)xmem_malloc(bufsize);
if (cmd->buf == NULL) { if (cmd->buf == NULL) {
fprintf(stderr, "fuse: failed to allocate read buffer\n"); fprintf(stderr, "fuse: failed to allocate read buffer\n");
free(cmd); xmem_free(cmd);
return NULL; return NULL;
} }
return cmd; return cmd;
@ -4314,7 +4243,7 @@ struct fuse_fs *fuse_fs_new(const struct fuse_operations *op, size_t op_size,
op_size = sizeof(struct fuse_operations); op_size = sizeof(struct fuse_operations);
} }
fs = (struct fuse_fs *) calloc(1, sizeof(struct fuse_fs)); fs = (struct fuse_fs *)xmem_calloc(1, sizeof(struct fuse_fs));
if (!fs) { if (!fs) {
fprintf(stderr, "fuse: failed to allocate fuse_fs object\n"); fprintf(stderr, "fuse: failed to allocate fuse_fs object\n");
return NULL; return NULL;
@ -4329,7 +4258,7 @@ struct fuse_fs *fuse_fs_new(const struct fuse_operations *op, size_t op_size,
static int node_table_init(struct node_table *t) static int node_table_init(struct node_table *t)
{ {
t->size = NODE_TABLE_MIN_SIZE; t->size = NODE_TABLE_MIN_SIZE;
t->array = (struct node **) calloc(1, sizeof(struct node *) * t->size); t->array = (struct node **)xmem_calloc(1, sizeof(struct node *) * t->size);
if (t->array == NULL) { if (t->array == NULL) {
fprintf(stderr, "fuse: memory allocation failed\n"); fprintf(stderr, "fuse: memory allocation failed\n");
return -1; return -1;
@ -4382,7 +4311,7 @@ struct fuse *fuse_new_common(struct fuse_chan *ch, struct fuse_args *args,
if (fuse_create_context_key() == -1) if (fuse_create_context_key() == -1)
goto out; goto out;
f = (struct fuse *) calloc(1, sizeof(struct fuse)); f = (struct fuse *)xmem_calloc(1,sizeof(struct fuse));
if (f == NULL) { if (f == NULL) {
fprintf(stderr, "fuse: failed to allocate fuse object\n"); fprintf(stderr, "fuse: failed to allocate fuse object\n");
goto out_delete_context_key; goto out_delete_context_key;
@ -4457,11 +4386,11 @@ struct fuse *fuse_new_common(struct fuse_chan *ch, struct fuse_args *args,
return f; return f;
out_free_root: out_free_root:
free(root); xmem_free(root);
out_free_id_table: out_free_id_table:
free(f->id_table.array); xmem_free(f->id_table.array);
out_free_name_table: out_free_name_table:
free(f->name_table.array); xmem_free(f->name_table.array);
out_free_session: out_free_session:
fuse_session_destroy(f->se); fuse_session_destroy(f->se);
out_free_fs: out_free_fs:
@ -4470,7 +4399,7 @@ struct fuse *fuse_new_common(struct fuse_chan *ch, struct fuse_args *args,
fs->op.destroy = NULL; fs->op.destroy = NULL;
fuse_fs_destroy(f->fs); fuse_fs_destroy(f->fs);
out_free: out_free:
free(f); xmem_free(f);
out_delete_context_key: out_delete_context_key:
fuse_delete_context_key(); fuse_delete_context_key();
out: out:
@ -4520,11 +4449,11 @@ void fuse_destroy(struct fuse *f)
assert(list_empty(&f->partial_slabs)); assert(list_empty(&f->partial_slabs));
assert(list_empty(&f->full_slabs)); assert(list_empty(&f->full_slabs));
free(f->id_table.array); xmem_free(f->id_table.array);
free(f->name_table.array); xmem_free(f->name_table.array);
pthread_mutex_destroy(&f->lock); pthread_mutex_destroy(&f->lock);
fuse_session_destroy(f->se); fuse_session_destroy(f->se);
free(f); xmem_free(f);
fuse_delete_context_key(); fuse_delete_context_key();
} }

7
libfuse/lib/fuse_dirents.c
View File

@ -7,6 +7,7 @@
#include "fuse_entry.h" #include "fuse_entry.h"
#include "linux_dirent64.h" #include "linux_dirent64.h"
#include "stat_utils.h" #include "stat_utils.h"
#include "xmem.h"
#include <dirent.h> #include <dirent.h>
#include <errno.h> #include <errno.h>
@ -61,7 +62,7 @@ fuse_dirents_buf_resize(fuse_dirents_t *d_,
if((d_->data_len + size_) >= d_->buf_len) if((d_->data_len + size_) >= d_->buf_len)
{ {
p = realloc(d_->buf,(d_->buf_len * 2)); p = xmem_realloc(d_->buf,(d_->buf_len * 2));
if(p == NULL) if(p == NULL)
return -errno; return -errno;
@ -381,7 +382,7 @@ fuse_dirents_init(fuse_dirents_t *d_)
{ {
void *buf; void *buf;
buf = calloc(DEFAULT_SIZE,1); buf = xmem_calloc(DEFAULT_SIZE,1);
if(buf == NULL) if(buf == NULL)
return -ENOMEM; return -ENOMEM;
@ -406,5 +407,5 @@ fuse_dirents_free(fuse_dirents_t *d_)
kv_destroy(d_->offs); kv_destroy(d_->offs);
free(d_->buf); xmem_free(d_->buf);
} }

17
libfuse/lib/fuse_loop_mt.c
View File

@ -10,6 +10,7 @@
#include "fuse_misc.h" #include "fuse_misc.h"
#include "fuse_kernel.h" #include "fuse_kernel.h"
#include "fuse_i.h" #include "fuse_i.h"
#include "xmem.h"
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
@ -134,28 +135,28 @@ int fuse_start_thread(pthread_t *thread_id, void *(*func)(void *), void *arg)
static int fuse_loop_start_thread(struct fuse_mt *mt) static int fuse_loop_start_thread(struct fuse_mt *mt)
{ {
int res; int res;
struct fuse_worker *w = malloc(sizeof(struct fuse_worker)); struct fuse_worker *w = xmem_malloc(sizeof(struct fuse_worker));
if (!w) { if (!w) {
fprintf(stderr, "fuse: failed to allocate worker structure\n"); fprintf(stderr, "fuse: failed to allocate worker structure\n");
return -1; return -1;
} }
memset(w, 0, sizeof(struct fuse_worker)); memset(w, 0, sizeof(struct fuse_worker));
w->bufsize = fuse_chan_bufsize(mt->prevch); w->bufsize = fuse_chan_bufsize(mt->prevch);
w->buf = calloc(w->bufsize,1); w->buf = xmem_calloc(w->bufsize,1);
w->mt = mt; w->mt = mt;
if (!w->buf) { if (!w->buf) {
fprintf(stderr, "fuse: failed to allocate read buffer\n"); fprintf(stderr, "fuse: failed to allocate read buffer\n");
free(w); xmem_free(w);
return -1; return -1;
} }
res = fuse_start_thread(&w->thread_id, fuse_do_work, w); res = fuse_start_thread(&w->thread_id, fuse_do_work, w);
if (res == -1) { if (res == -1) {
free(w->buf); xmem_free(w->buf);
free(w); xmem_free(w);
return -1; return -1;
} }
list_add_worker(w, &mt->main); list_add_worker(w,&mt->main);
return 0; return 0;
} }
@ -164,8 +165,8 @@ static void fuse_join_worker(struct fuse_worker *w)
{ {
pthread_join(w->thread_id, NULL); pthread_join(w->thread_id, NULL);
list_del_worker(w); list_del_worker(w);
free(w->buf); xmem_free(w->buf);
free(w); xmem_free(w);
} }
static int number_of_threads(void) static int number_of_threads(void)

70
libfuse/lib/fuse_lowlevel.c
View File

@ -13,6 +13,7 @@
#include "fuse_kernel.h" #include "fuse_kernel.h"
#include "fuse_opt.h" #include "fuse_opt.h"
#include "fuse_misc.h" #include "fuse_misc.h"
#include "xmem.h"
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
@ -127,7 +128,7 @@ static void list_add_req(struct fuse_req *req, struct fuse_req *next)
static void destroy_req(fuse_req_t req) static void destroy_req(fuse_req_t req)
{ {
pthread_mutex_destroy(&req->lock); pthread_mutex_destroy(&req->lock);
free(req); xmem_free(req);
} }
void fuse_free_req(fuse_req_t req) void fuse_free_req(fuse_req_t req)
@ -149,7 +150,7 @@ static struct fuse_req *fuse_ll_alloc_req(struct fuse_ll *f)
{ {
struct fuse_req *req; struct fuse_req *req;
req = (struct fuse_req *) calloc(1, sizeof(struct fuse_req)); req = (struct fuse_req *)xmem_calloc(1, sizeof(struct fuse_req));
if (req == NULL) { if (req == NULL) {
fprintf(stderr, "fuse: failed to allocate request\n"); fprintf(stderr, "fuse: failed to allocate request\n");
} else { } else {
@ -162,7 +163,6 @@ static struct fuse_req *fuse_ll_alloc_req(struct fuse_ll *f)
return req; return req;
} }
static int fuse_send_msg(struct fuse_ll *f, struct fuse_chan *ch, static int fuse_send_msg(struct fuse_ll *f, struct fuse_chan *ch,
struct iovec *iov, int count) struct iovec *iov, int count)
{ {
@ -235,7 +235,7 @@ int fuse_reply_iov(fuse_req_t req, const struct iovec *iov, int count)
int res; int res;
struct iovec *padded_iov; struct iovec *padded_iov;
padded_iov = malloc((count + 1) * sizeof(struct iovec)); padded_iov = xmem_malloc((count + 1) * sizeof(struct iovec));
if (padded_iov == NULL) if (padded_iov == NULL)
return fuse_reply_err(req, ENOMEM); return fuse_reply_err(req, ENOMEM);
@ -243,7 +243,7 @@ int fuse_reply_iov(fuse_req_t req, const struct iovec *iov, int count)
count++; count++;
res = send_reply_iov(req, 0, padded_iov, count); res = send_reply_iov(req, 0, padded_iov, count);
free(padded_iov); xmem_free(padded_iov);
return res; return res;
} }
@ -451,7 +451,7 @@ static int fuse_send_data_iov_fallback(struct fuse_ll *f, struct fuse_chan *ch,
mem_buf.buf[0].mem = mbuf; mem_buf.buf[0].mem = mbuf;
res = fuse_buf_copy(&mem_buf, buf, 0); res = fuse_buf_copy(&mem_buf, buf, 0);
if (res < 0) { if (res < 0) {
free(mbuf); xmem_free(mbuf);
return -res; return -res;
} }
len = res; len = res;
@ -460,7 +460,7 @@ static int fuse_send_data_iov_fallback(struct fuse_ll *f, struct fuse_chan *ch,
iov[iov_count].iov_len = len; iov[iov_count].iov_len = len;
iov_count++; iov_count++;
res = fuse_send_msg(f, ch, iov, iov_count); res = fuse_send_msg(f, ch, iov, iov_count);
free(mbuf); xmem_free(mbuf);
return res; return res;
} }
@ -475,7 +475,7 @@ static void fuse_ll_pipe_free(struct fuse_ll_pipe *llp)
{ {
close(llp->pipe[0]); close(llp->pipe[0]);
close(llp->pipe[1]); close(llp->pipe[1]);
free(llp); xmem_free(llp);
} }
#ifdef HAVE_SPLICE #ifdef HAVE_SPLICE
@ -485,13 +485,13 @@ static struct fuse_ll_pipe *fuse_ll_get_pipe(struct fuse_ll *f)
if (llp == NULL) { if (llp == NULL) {
int res; int res;
llp = malloc(sizeof(struct fuse_ll_pipe)); llp = xmem_malloc(sizeof(struct fuse_ll_pipe));
if (llp == NULL) if (llp == NULL)
return NULL; return NULL;
res = pipe(llp->pipe); res = pipe(llp->pipe);
if (res == -1) { if (res == -1) {
free(llp); xmem_free(llp);
return NULL; return NULL;
} }
@ -499,7 +499,7 @@ static struct fuse_ll_pipe *fuse_ll_get_pipe(struct fuse_ll *f)
fcntl(llp->pipe[1], F_SETFL, O_NONBLOCK) == -1) { fcntl(llp->pipe[1], F_SETFL, O_NONBLOCK) == -1) {
close(llp->pipe[0]); close(llp->pipe[0]);
close(llp->pipe[1]); close(llp->pipe[1]);
free(llp); xmem_free(llp);
return NULL; return NULL;
} }
@ -674,21 +674,21 @@ static int fuse_send_data_iov(struct fuse_ll *f, struct fuse_chan *ch,
* back the data from the pipe and then fall * back the data from the pipe and then fall
* back to regular write. * back to regular write.
*/ */
tmpbuf = malloc(headerlen); tmpbuf = xmem_malloc(headerlen);
if (tmpbuf == NULL) { if (tmpbuf == NULL) {
free(mbuf); xmem_free(mbuf);
res = ENOMEM; res = ENOMEM;
goto clear_pipe; goto clear_pipe;
} }
res = read_back(llp->pipe[0], tmpbuf, headerlen); res = read_back(llp->pipe[0], tmpbuf, headerlen);
free(tmpbuf); xmem_free(tmpbuf);
if (res != 0) { if (res != 0) {
free(mbuf); xmem_free(mbuf);
goto clear_pipe; goto clear_pipe;
} }
res = read_back(llp->pipe[0], mbuf, now_len); res = read_back(llp->pipe[0], mbuf, now_len);
if (res != 0) { if (res != 0) {
free(mbuf); xmem_free(mbuf);
goto clear_pipe; goto clear_pipe;
} }
len = now_len + extra_len; len = now_len + extra_len;
@ -696,10 +696,10 @@ static int fuse_send_data_iov(struct fuse_ll *f, struct fuse_chan *ch,
iov[iov_count].iov_len = len; iov[iov_count].iov_len = len;
iov_count++; iov_count++;
res = fuse_send_msg(f, ch, iov, iov_count); res = fuse_send_msg(f, ch, iov, iov_count);
free(mbuf); xmem_free(mbuf);
return res; return res;
} }
free(mbuf); xmem_free(mbuf);
res = now_len; res = now_len;
} }
len = res; len = res;
@ -827,7 +827,7 @@ static struct fuse_ioctl_iovec *fuse_ioctl_iovec_copy(const struct iovec *iov,
struct fuse_ioctl_iovec *fiov; struct fuse_ioctl_iovec *fiov;
size_t i; size_t i;
fiov = malloc(sizeof(fiov[0]) * count); fiov = xmem_malloc(sizeof(fiov[0]) * count);
if (!fiov) if (!fiov)
return NULL; return NULL;
@ -899,8 +899,8 @@ int fuse_reply_ioctl_retry(fuse_req_t req,
res = send_reply_iov(req, 0, iov, count); res = send_reply_iov(req, 0, iov, count);
out: out:
free(in_fiov); xmem_free(in_fiov);
free(out_fiov); xmem_free(out_fiov);
return res; return res;
@ -942,7 +942,7 @@ int fuse_reply_ioctl_iov(fuse_req_t req, int result, const struct iovec *iov,
struct fuse_ioctl_out arg; struct fuse_ioctl_out arg;
int res; int res;
padded_iov = malloc((count + 2) * sizeof(struct iovec)); padded_iov = xmem_malloc((count + 2) * sizeof(struct iovec));
if (padded_iov == NULL) if (padded_iov == NULL)
return fuse_reply_err(req, ENOMEM); return fuse_reply_err(req, ENOMEM);
@ -954,7 +954,7 @@ int fuse_reply_ioctl_iov(fuse_req_t req, int result, const struct iovec *iov,
memcpy(&padded_iov[2], iov, count * sizeof(struct iovec)); memcpy(&padded_iov[2], iov, count * sizeof(struct iovec));
res = send_reply_iov(req, 0, padded_iov, count + 2); res = send_reply_iov(req, 0, padded_iov, count + 2);
free(padded_iov); xmem_free(padded_iov);
return res; return res;
} }
@ -1648,7 +1648,7 @@ static struct fuse_req *check_interrupt(struct fuse_ll *f, struct fuse_req *req)
if (curr->u.i.unique == req->unique) { if (curr->u.i.unique == req->unique) {
req->interrupted = 1; req->interrupted = 1;
list_del_req(curr); list_del_req(curr);
free(curr); xmem_free(curr);
return NULL; return NULL;
} }
} }
@ -1702,7 +1702,7 @@ static void do_ioctl(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
void fuse_pollhandle_destroy(struct fuse_pollhandle *ph) void fuse_pollhandle_destroy(struct fuse_pollhandle *ph)
{ {
free(ph); xmem_free(ph);
} }
static void do_poll(fuse_req_t req, fuse_ino_t nodeid, const void *inarg) static void do_poll(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
@ -1717,7 +1717,7 @@ static void do_poll(fuse_req_t req, fuse_ino_t nodeid, const void *inarg)
struct fuse_pollhandle *ph = NULL; struct fuse_pollhandle *ph = NULL;
if (arg->flags & FUSE_POLL_SCHEDULE_NOTIFY) { if (arg->flags & FUSE_POLL_SCHEDULE_NOTIFY) {
ph = malloc(sizeof(struct fuse_pollhandle)); ph = xmem_malloc(sizeof(struct fuse_pollhandle));
if (ph == NULL) { if (ph == NULL) {
fuse_reply_err(req, ENOMEM); fuse_reply_err(req, ENOMEM);
return; return;
@ -2224,7 +2224,7 @@ static void fuse_ll_retrieve_reply(struct fuse_notify_req *nreq,
fuse_reply_none(req); fuse_reply_none(req);
} }
out: out:
free(rreq); xmem_free(rreq);
if ((ibuf->flags & FUSE_BUF_IS_FD) && bufv.idx < bufv.count) if ((ibuf->flags & FUSE_BUF_IS_FD) && bufv.idx < bufv.count)
fuse_ll_clear_pipe(f); fuse_ll_clear_pipe(f);
} }
@ -2248,7 +2248,7 @@ int fuse_lowlevel_notify_retrieve(struct fuse_chan *ch, fuse_ino_t ino,
if (f->conn.proto_minor < 15) if (f->conn.proto_minor < 15)
return -ENOSYS; return -ENOSYS;
rreq = malloc(sizeof(*rreq)); rreq = xmem_malloc(sizeof(*rreq));
if (rreq == NULL) if (rreq == NULL)
return -ENOMEM; return -ENOMEM;
@ -2272,7 +2272,7 @@ int fuse_lowlevel_notify_retrieve(struct fuse_chan *ch, fuse_ino_t ino,
pthread_mutex_lock(&f->lock); pthread_mutex_lock(&f->lock);
list_del_nreq(&rreq->nreq); list_del_nreq(&rreq->nreq);
pthread_mutex_unlock(&f->lock); pthread_mutex_unlock(&f->lock);
free(rreq); xmem_free(rreq);
} }
return err; return err;
@ -2406,7 +2406,7 @@ static void fuse_ll_process_buf(void *data, const struct fuse_buf *buf,
if (buf->size < tmpbuf.buf[0].size) if (buf->size < tmpbuf.buf[0].size)
tmpbuf.buf[0].size = buf->size; tmpbuf.buf[0].size = buf->size;
mbuf = malloc(tmpbuf.buf[0].size); mbuf = xmem_malloc(tmpbuf.buf[0].size);
if (mbuf == NULL) { if (mbuf == NULL) {
fprintf(stderr, "fuse: failed to allocate header\n"); fprintf(stderr, "fuse: failed to allocate header\n");
goto clear_pipe; goto clear_pipe;
@ -2498,7 +2498,7 @@ static void fuse_ll_process_buf(void *data, const struct fuse_buf *buf,
void *newmbuf; void *newmbuf;
err = ENOMEM; err = ENOMEM;
newmbuf = realloc(mbuf, buf->size); newmbuf = xmem_realloc(mbuf, buf->size);
if (newmbuf == NULL) if (newmbuf == NULL)
goto reply_err; goto reply_err;
mbuf = newmbuf; mbuf = newmbuf;
@ -2523,7 +2523,7 @@ static void fuse_ll_process_buf(void *data, const struct fuse_buf *buf,
fuse_ll_ops[in->opcode].func(req, in->nodeid, inarg); fuse_ll_ops[in->opcode].func(req, in->nodeid, inarg);
out_free: out_free:
free(mbuf); xmem_free(mbuf);
return; return;
reply_err: reply_err:
@ -2637,7 +2637,7 @@ static void fuse_ll_destroy(void *data)
fuse_ll_pipe_free(llp); fuse_ll_pipe_free(llp);
pthread_key_delete(f->pipe_key); pthread_key_delete(f->pipe_key);
pthread_mutex_destroy(&f->lock); pthread_mutex_destroy(&f->lock);
free(f); xmem_free(f);
} }
static void fuse_ll_pipe_destructor(void *data) static void fuse_ll_pipe_destructor(void *data)
@ -2783,7 +2783,7 @@ struct fuse_session *fuse_lowlevel_new_common(struct fuse_args *args,
op_size = sizeof(struct fuse_lowlevel_ops); op_size = sizeof(struct fuse_lowlevel_ops);
} }
f = (struct fuse_ll *) calloc(1, sizeof(struct fuse_ll)); f = (struct fuse_ll *)xmem_calloc(1, sizeof(struct fuse_ll));
if (f == NULL) { if (f == NULL) {
fprintf(stderr, "fuse: failed to allocate fuse object\n"); fprintf(stderr, "fuse: failed to allocate fuse object\n");
goto out; goto out;
@ -2827,7 +2827,7 @@ struct fuse_session *fuse_lowlevel_new_common(struct fuse_args *args,
pthread_key_delete(f->pipe_key); pthread_key_delete(f->pipe_key);
out_free: out_free:
pthread_mutex_destroy(&f->lock); pthread_mutex_destroy(&f->lock);
free(f); xmem_free(f);
out: out:
return NULL; return NULL;
} }

21
libfuse/lib/fuse_opt.c
View File

@ -8,6 +8,7 @@
#include "fuse_opt.h" #include "fuse_opt.h"
#include "fuse_misc.h" #include "fuse_misc.h"
#include "xmem.h"
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
@ -34,8 +35,8 @@ fuse_opt_free_args(struct fuse_args *args)
if (args->argv && args->allocated) { if (args->argv && args->allocated) {
int i; int i;
for (i = 0; i < args->argc; i++) for (i = 0; i < args->argc; i++)
free(args->argv[i]); xmem_free(args->argv[i]);
free(args->argv); xmem_free(args->argv);
} }
args->argc = 0; args->argc = 0;
args->argv = NULL; args->argv = NULL;
@ -63,9 +64,9 @@ fuse_opt_add_arg(struct fuse_args *args, const char *arg)
if (!newarg) if (!newarg)
return alloc_failed(); return alloc_failed();
newargv = realloc(args->argv, (args->argc + 2) * sizeof(char *)); newargv = xmem_realloc(args->argv, (args->argc + 2) * sizeof(char *));
if (!newargv) { if (!newargv) {
free(newarg); xmem_free(newarg);
return alloc_failed(); return alloc_failed();
} }
@ -115,7 +116,7 @@ static int add_arg(struct fuse_opt_context *ctx, const char *arg)
static int add_opt_common(char **opts, const char *opt, int esc) static int add_opt_common(char **opts, const char *opt, int esc)
{ {
unsigned oldlen = *opts ? strlen(*opts) : 0; unsigned oldlen = *opts ? strlen(*opts) : 0;
char *d = realloc(*opts, oldlen + 1 + strlen(opt) * 2 + 1); char *d = xmem_realloc(*opts, oldlen + 1 + strlen(opt) * 2 + 1);
if (!d) if (!d)
return alloc_failed(); return alloc_failed();
@ -257,14 +258,14 @@ static int process_opt_sep_arg(struct fuse_opt_context *ctx,
return -1; return -1;
param = ctx->argv[ctx->argctr]; param = ctx->argv[ctx->argctr];
newarg = malloc(sep + strlen(param) + 1); newarg = xmem_malloc(sep + strlen(param) + 1);
if (!newarg) if (!newarg)
return alloc_failed(); return alloc_failed();
memcpy(newarg, arg, sep); memcpy(newarg, arg, sep);
strcpy(newarg + sep, param); strcpy(newarg + sep, param);
res = process_opt(ctx, opt, sep, newarg, iso); res = process_opt(ctx, opt, sep, newarg, iso);
free(newarg); xmem_free(newarg);
return res; return res;
} }
@ -339,7 +340,7 @@ static int process_option_group(struct fuse_opt_context *ctx, const char *opts)
return -1; return -1;
} }
res = process_real_option_group(ctx, copy); res = process_real_option_group(ctx, copy);
free(copy); xmem_free(copy);
return res; return res;
} }
@ -386,7 +387,7 @@ static int opt_parse(struct fuse_opt_context *ctx)
/* If option separator ("--") is the last argument, remove it */ /* If option separator ("--") is the last argument, remove it */
if (ctx->nonopt && ctx->nonopt == ctx->outargs.argc && if (ctx->nonopt && ctx->nonopt == ctx->outargs.argc &&
strcmp(ctx->outargs.argv[ctx->outargs.argc - 1], "--") == 0) { strcmp(ctx->outargs.argv[ctx->outargs.argc - 1], "--") == 0) {
free(ctx->outargs.argv[ctx->outargs.argc - 1]); xmem_free(ctx->outargs.argv[ctx->outargs.argc - 1]);
ctx->outargs.argv[--ctx->outargs.argc] = NULL; ctx->outargs.argv[--ctx->outargs.argc] = NULL;
} }
@ -415,7 +416,7 @@ int fuse_opt_parse(struct fuse_args *args, void *data,
*args = ctx.outargs; *args = ctx.outargs;
ctx.outargs = tmp; ctx.outargs = tmp;
} }
free(ctx.opts); xmem_free(ctx.opts);
fuse_opt_free_args(&ctx.outargs); fuse_opt_free_args(&ctx.outargs);
return res; return res;
} }

9
libfuse/lib/fuse_session.c
View File

@ -8,6 +8,7 @@
#include "fuse_i.h" #include "fuse_i.h"
#include "fuse_misc.h" #include "fuse_misc.h"
#include "xmem.h"
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
@ -26,7 +27,7 @@ struct fuse_chan
struct fuse_session *fuse_session_new(struct fuse_session_ops *op, void *data) struct fuse_session *fuse_session_new(struct fuse_session_ops *op, void *data)
{ {
struct fuse_session *se = (struct fuse_session *) malloc(sizeof(*se)); struct fuse_session *se = (struct fuse_session *)xmem_malloc(sizeof(*se));
if (se == NULL) { if (se == NULL) {
fprintf(stderr, "fuse: failed to allocate session\n"); fprintf(stderr, "fuse: failed to allocate session\n");
return NULL; return NULL;
@ -107,7 +108,7 @@ void fuse_session_destroy(struct fuse_session *se)
se->op.destroy(se->data); se->op.destroy(se->data);
if (se->ch != NULL) if (se->ch != NULL)
fuse_chan_destroy(se->ch); fuse_chan_destroy(se->ch);
free(se); xmem_free(se);
} }
void fuse_session_exit(struct fuse_session *se) void fuse_session_exit(struct fuse_session *se)
@ -140,7 +141,7 @@ void *fuse_session_data(struct fuse_session *se)
static struct fuse_chan *fuse_chan_new_common(struct fuse_chan_ops *op, int fd, static struct fuse_chan *fuse_chan_new_common(struct fuse_chan_ops *op, int fd,
size_t bufsize, void *data) size_t bufsize, void *data)
{ {
struct fuse_chan *ch = (struct fuse_chan *) malloc(sizeof(*ch)); struct fuse_chan *ch = (struct fuse_chan *)xmem_malloc(sizeof(*ch));
if (ch == NULL) { if (ch == NULL) {
fprintf(stderr, "fuse: failed to allocate channel\n"); fprintf(stderr, "fuse: failed to allocate channel\n");
return NULL; return NULL;
@ -213,5 +214,5 @@ void fuse_chan_destroy(struct fuse_chan *ch)
fuse_session_remove_chan(ch); fuse_session_remove_chan(ch);
if (ch->op.destroy) if (ch->op.destroy)
ch->op.destroy(ch); ch->op.destroy(ch);
free(ch); xmem_free(ch);
} }

323
libfuse/lib/xmem.c Normal file
View File

@ -0,0 +1,323 @@
/*
ISC License
Copyright (c) 2020, Antonio SJ Musumeci <trapexit@spawn.link>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "khash.h"
#include <pthread.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
typedef struct meminfo_s meminfo_t;
struct meminfo_s
{
const char *file;
int line;
size_t size;
};
#define kh_voidp_hash_func(KEY) ((((uint64_t)KEY)>>33)^((uint64_t)KEY)^(((uint64_t)KEY)<<11))
#define kh_voidp_hash_equal(A,B) ((A) == (B))
#define kh_meminfo_hash_func(KEY) ((((uint64_t)KEY.file)>>33)^((uint64_t)KEY.file)^(((uint64_t)KEY.file)<<11))
#define kh_meminfo_hash_equal(A,B) (((A).file == (B).file) && ((A).line == (B).line))
KHASH_INIT(mem,void*,meminfo_t,1,kh_voidp_hash_func,kh_voidp_hash_equal)
KHASH_INIT(memrev,meminfo_t,uint64_t,1,kh_meminfo_hash_func,kh_meminfo_hash_equal)
static int g_ENABLED = 0;
static kh_mem_t *g_HASH = NULL;
static pthread_mutex_t g_HASH_MUTEX;
static int g_PRINT = 0;
__attribute__((constructor))
static
void
xmem_init(void)
{
pthread_mutex_init(&g_HASH_MUTEX,NULL);
g_HASH = kh_init_mem();
}
__attribute__((destructor))
static
void
xmem_destroy(void)
{
kh_destroy_mem(g_HASH);
}
void
xmem_enable(void)
{
g_ENABLED = 1;
}
void
xmem_disable(void)
{
g_ENABLED = 0;
}
void
xmem_print(FILE *file_)
{
khint_t k;
kh_memrev_t *rev;
if(file_ == NULL)
file_ = stderr;
rev = kh_init_memrev();
pthread_mutex_lock(&g_HASH_MUTEX);
for(k = kh_begin(g_HASH); k != kh_end(g_HASH); ++k)
{
if(kh_exist(g_HASH,k))
{
int ret;
khint_t kr;
meminfo_t *mi;
mi = &kh_value(g_HASH,k);
kr = kh_put(memrev,rev,*mi,&ret);
if(ret == 1)
kh_value(rev,kr) = 0;
kh_value(rev,kr) += mi->size;
}
}
pthread_mutex_unlock(&g_HASH_MUTEX);
for(k = kh_begin(rev); k != kh_end(rev); ++k)
{
if(!kh_exist(rev,k))
continue;
fprintf(file_,
"%s:%d: %lu\n",
kh_key(rev,k).file,
kh_key(rev,k).line,
kh_value(rev,k));
}
kh_destroy_memrev(rev);
}
void
xmem_print_to_tmp(void)
{
FILE *file;
char filepath[256];
sprintf(filepath,"/tmp/xmem.%d.%ld",getpid(),time(NULL));
file = fopen(filepath,"w+");
xmem_print(file);
fclose(file);
}
void*
xmem_malloc_(size_t size_,
const char *file_,
const int line_)
{
void *rv;
if(g_ENABLED == 0)
return malloc(size_);
pthread_mutex_lock(&g_HASH_MUTEX);
rv = malloc(size_);
if(rv != NULL)
{
int ret;
khint_t k;
meminfo_t *meminfo;
k = kh_put(mem,g_HASH,rv,&ret);
meminfo = &kh_value(g_HASH,k);
meminfo->file = file_;
meminfo->line = line_;
meminfo->size = size_;
}
pthread_mutex_unlock(&g_HASH_MUTEX);
if(g_PRINT)
fprintf(stderr,"malloc: %lu bytes @ %p - %s:%d\n",size_,rv,file_,line_);
return rv;
}
void*
xmem_realloc_(void *ptr_,
size_t size_,
const char *file_,
const int line_)
{
void *rv;
if(g_ENABLED == 0)
return realloc(ptr_,size_);
if(ptr_ == NULL)
return xmem_malloc_(size_,file_,line_);
pthread_mutex_lock(&g_HASH_MUTEX);
rv = realloc(ptr_,size_);
if(rv != NULL)
{
int ret;
khint_t k;
meminfo_t *meminfo;
k = kh_get(mem,g_HASH,ptr_);
if(k != kh_end(g_HASH))
{
if(rv != ptr_)
{
kh_del(mem,g_HASH,k);
k = kh_put(mem,g_HASH,rv,&ret);
}
meminfo = &kh_value(g_HASH,k);
meminfo->file = file_;
meminfo->line = line_;
meminfo->size = size_;
}
}
pthread_mutex_unlock(&g_HASH_MUTEX);
if(g_PRINT)
fprintf(stderr,"realloc: %lu bytes @ %p - %s:%d\n",size_,rv,file_,line_);
return rv;
}
void*
xmem_calloc_(size_t nmemb_,
size_t size_,
const char *file_,
const int line_)
{
void *rv;
if(g_ENABLED == 0)
return calloc(nmemb_,size_);
pthread_mutex_lock(&g_HASH_MUTEX);
rv = calloc(nmemb_,size_);
if(rv != NULL)
{
int ret;
khint_t k;
meminfo_t *meminfo;
k = kh_put(mem,g_HASH,rv,&ret);
meminfo = &kh_value(g_HASH,k);
meminfo->file = file_;
meminfo->line = line_;
meminfo->size = (nmemb_ * size_);
}
pthread_mutex_unlock(&g_HASH_MUTEX);
if(g_PRINT)
fprintf(stderr,"calloc: %lu bytes @ %p - %s:%d\n",nmemb_*size_,rv,file_,line_);
return rv;
}
char*
xmem_strdup_(const char *s_,
const char *file_,
const int line_)
{
char *rv;
size_t size;
if(g_ENABLED == 0)
return strdup(s_);
pthread_mutex_lock(&g_HASH_MUTEX);
size = 0;
rv = strdup(s_);
if(rv != NULL)
{
int ret;
khint_t k;
meminfo_t *meminfo;
k = kh_put(mem,g_HASH,rv,&ret);
meminfo = &kh_value(g_HASH,k);
size = strlen(s_);
meminfo->file = file_;
meminfo->line = line_;
meminfo->size = size;
}
pthread_mutex_unlock(&g_HASH_MUTEX);
if(g_PRINT)
fprintf(stderr,"strdup: %lu bytes @ %p - %s:%d\n",size,rv,file_,line_);
return rv;
}
void
xmem_free_(void *ptr_,
const char *file_,
const int line_)
{
khint_t key;
if(g_ENABLED == 0)
return free(ptr_);
pthread_mutex_lock(&g_HASH_MUTEX);
free(ptr_);
key = kh_get(mem,g_HASH,ptr_);
if(key != kh_end(g_HASH))
kh_del(mem,g_HASH,key);
pthread_mutex_unlock(&g_HASH_MUTEX);
if(g_PRINT)
fprintf(stderr,"free: %p - %s:%d\n",ptr_,file_,line_);
}

39
libfuse/lib/xmem.h Normal file
View File

@ -0,0 +1,39 @@
/*
ISC License
Copyright (c) 2020, Antonio SJ Musumeci <trapexit@spawn.link>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#pragma once
#include <stdio.h>
#include <stdlib.h>
extern void xmem_enable(void);
extern void xmem_disable(void);
extern void *xmem_malloc_(size_t size, const char *file, const int line);
extern void *xmem_realloc_(void *ptr, size_t size, const char *file, const int line);
extern void *xmem_calloc_(size_t nmemb, size_t size, const char *file, const int line);
extern void xmem_free_(void *ptr, const char *file, const int line);
extern char *xmem_strdup_(const char *s, const char *file, const int line);
extern void xmem_print(FILE *file);
#define xmem_malloc(SIZE) (xmem_malloc_((SIZE),__FILE__,__LINE__))
#define xmem_realloc(PTR,SIZE) (xmem_realloc_((PTR),(SIZE),__FILE__,__LINE__))
#define xmem_calloc(NMEMB,SIZE) (xmem_calloc_((NMEMB),(SIZE),__FILE__,__LINE__))
#define xmem_free(PTR) (xmem_free_((PTR),__FILE__,__LINE__))
#define xmem_strdup(STR) (xmem_strdup_((STR),__FILE__,__LINE__))

60
src/fuse_ioctl.cpp
View File

@ -27,6 +27,8 @@
#include "str.hpp" #include "str.hpp"
#include "ugid.hpp" #include "ugid.hpp"
#include "xmem.h"
#include <fuse.h> #include <fuse.h>
#include <string> #include <string>
@ -44,11 +46,14 @@ typedef char IOCTL_BUF[4096];
//#define IOCTL_READ_VAL 0xD000DF01 //#define IOCTL_READ_VAL 0xD000DF01
//#define IOCTL_WRITE_VAL 0x5000DF02 //#define IOCTL_WRITE_VAL 0x5000DF02
//#define IOCTL_FILE_INFO 0xD000DF03 //#define IOCTL_FILE_INFO 0xD000DF03
#define IOCTL_READ_KEYS _IOWR(IOCTL_APP_TYPE,0,IOCTL_BUF) #define IOCTL_READ_KEYS _IOWR(IOCTL_APP_TYPE,0,IOCTL_BUF)
#define IOCTL_READ_VAL _IOWR(IOCTL_APP_TYPE,1,IOCTL_BUF) #define IOCTL_READ_VAL _IOWR(IOCTL_APP_TYPE,1,IOCTL_BUF)
#define IOCTL_WRITE_VAL _IOW(IOCTL_APP_TYPE,2,IOCTL_BUF) #define IOCTL_WRITE_VAL _IOW(IOCTL_APP_TYPE,2,IOCTL_BUF)
#define IOCTL_FILE_INFO _IOWR(IOCTL_APP_TYPE,3,IOCTL_BUF) #define IOCTL_FILE_INFO _IOWR(IOCTL_APP_TYPE,3,IOCTL_BUF)
#define IOCTL_XMEM_PRINT _IO(IOCTL_APP_TYPE,4)
#define IOCTL_XMEM_ENABLE _IO(IOCTL_APP_TYPE,5)
#define IOCTL_XMEM_DISABLE _IO(IOCTL_APP_TYPE,6)
#define IOCTL_PRINT_NODES _IO(IOCTL_APP_TYPE,7)
#ifndef FS_IOC_GETFLAGS #ifndef FS_IOC_GETFLAGS
# define FS_IOC_GETFLAGS _IOR('f',1,long) # define FS_IOC_GETFLAGS _IOR('f',1,long)
@ -364,6 +369,38 @@ namespace l
return -ENOATTR; return -ENOATTR;
} }
static
int
ioctl_type_DF(unsigned long cmd_,
fuse_file_info *ffi_,
void *data_)
{
switch(cmd_)
{
case IOCTL_READ_KEYS:
return l::read_keys(data_);
case IOCTL_READ_VAL:
return l::read_val(data_);
case IOCTL_WRITE_VAL:
return l::write_val(data_);
case IOCTL_FILE_INFO:
return l::file_info(ffi_,data_);
case IOCTL_XMEM_PRINT:
xmem_print_to_tmp();
return 0;
case IOCTL_XMEM_ENABLE:
xmem_enable();
return 0;
case IOCTL_XMEM_DISABLE:
xmem_disable();
return 0;
case IOCTL_PRINT_NODES:
return -0xDEADBEEF;
}
return 0;
}
} }
namespace FUSE namespace FUSE
@ -376,17 +413,8 @@ namespace FUSE
void *data_, void *data_,
uint32_t *out_bufsz_) uint32_t *out_bufsz_)
{ {
switch(cmd_) if(((cmd_ >> 8) & 0xFF) == IOCTL_APP_TYPE)
{ return l::ioctl_type_DF(cmd_,ffi_,data_);
case IOCTL_READ_KEYS:
return l::read_keys(data_);
case IOCTL_READ_VAL:
return l::read_val(data_);
case IOCTL_WRITE_VAL:
return l::write_val(data_);
case IOCTL_FILE_INFO:
return l::file_info(ffi_,data_);
}
if(flags_ & FUSE_IOCTL_DIR) if(flags_ & FUSE_IOCTL_DIR)
return l::ioctl_dir(ffi_,cmd_,data_,out_bufsz_); return l::ioctl_dir(ffi_,cmd_,data_,out_bufsz_);