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consolidate and simplify utime

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This commit is contained in:
Antonio SJ Musumeci 2016-10-23 23:54:06 -04:00
parent 6d6fb45a3b
commit 00c814dc58
9 changed files with 472 additions and 225 deletions
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40
src/fs_time_futimens.icpp → src/fs_base_utime.hpp
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@ -14,20 +14,50 @@
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <fcntl.h>
#include <sys/stat.h>
#ifdef __linux__
# include "fs_base_utime_utimensat.hpp"
#elif __FreeBSD__ >= 11
# include "fs_base_utime_utimensat.hpp"
#else
# include "fs_base_utime_generic.hpp"
#endif
namespace fs
{
static
inline
int
utimes(const int fd,
const struct stat &st)
utime(const std::string &path,
const struct stat &st)
{
struct timespec times[2];
times[0] = st.st_atim;
times[1] = st.st_mtim;
return ::futimens(fd,times);
return fs::utime(AT_FDCWD,path,times,0);
}
static
inline
int
utime(const int fd,
const struct stat &st)
{
struct timespec times[2];
times[0] = st.st_atim;
times[1] = st.st_mtim;
return fs::utime(fd,times);
}
static
inline
int
lutime(const std::string &path,
const struct timespec times[2])
{
return fs::utime(AT_FDCWD,path,times,AT_SYMLINK_NOFOLLOW);
}
}

298
src/fs_base_utime_generic.hpp Normal file
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@ -0,0 +1,298 @@
/*
ISC License
Copyright (c) 2016, 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 <string>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/time.h>
#ifndef UTIME_NOW
# define UTIME_NOW ((1l << 30) - 1l)
#endif
#ifndef UTIME_OMIT
# define UTIME_OMIT ((1l << 30) - 2l)
#endif
static
inline
bool
_can_call_lutimes(const int dirfd,
const std::string &path,
const int flags)
{
return ((flags == AT_SYMLINK_NOFOLLOW) &&
((dirfd == AT_FDCWD) ||
(path[0] == '/')));
}
static
inline
bool
_should_ignore(const struct timespec ts[2])
{
return ((ts != NULL) &&
(ts[0].tv_nsec == UTIME_OMIT) &&
(ts[1].tv_nsec == UTIME_OMIT));
}
static
inline
bool
_should_be_set_to_now(const struct timespec ts[2])
{
return ((ts == NULL) ||
((ts[0].tv_nsec == UTIME_NOW) &&
(ts[1].tv_nsec == UTIME_NOW)));
}
static
inline
bool
_timespec_invalid(const struct timespec &ts)
{
return (((ts.tv_nsec < 0) ||
(ts.tv_nsec > 999999999)) &&
((ts.tv_nsec != UTIME_NOW) &&
(ts.tv_nsec != UTIME_OMIT)));
}
static
inline
bool
_timespec_invalid(const struct timespec ts[2])
{
return ((ts != NULL) &&
(_timespec_invalid(ts[0]) ||
_timespec_invalid(ts[1])));
}
static
inline
bool
_flags_invalid(const int flags)
{
return ((flags & ~AT_SYMLINK_NOFOLLOW) != 0);
}
static
inline
bool
_any_timespec_is_utime_omit(const struct timespec ts[2])
{
return ((ts[0].tv_nsec == UTIME_OMIT) ||
(ts[1].tv_nsec == UTIME_OMIT));
}
static
inline
bool
_any_timespec_is_utime_now(const struct timespec ts[2])
{
return ((ts[0].tv_nsec == UTIME_NOW) ||
(ts[1].tv_nsec == UTIME_NOW));
}
static
inline
int
_set_utime_omit_to_current_value(const int dirfd,
const std::string &path,
const struct timespec ts[2],
struct timeval tv[2],
const int flags)
{
int rv;
struct stat st;
if(!_any_timespec_is_utime_omit(ts))
return 0;
rv = ::fstatat(dirfd,path.c_str(),&st,flags);
if(rv == -1)
return -1;
if(ts[0].tv_nsec == UTIME_OMIT)
TIMESPEC_TO_TIMEVAL(&tv[0],&st.st_atim);
if(ts[1].tv_nsec == UTIME_OMIT)
TIMESPEC_TO_TIMEVAL(&tv[1],&st.st_mtim);
return 0;
}
static
inline
int
_set_utime_omit_to_current_value(const int fd,
const struct timespec ts[2],
struct timeval tv[2])
{
int rv;
struct stat st;
if(!_any_timespec_is_utime_omit(ts))
return 0;
rv = ::fstat(fd,&st);
if(rv == -1)
return -1;
if(ts[0].tv_nsec == UTIME_OMIT)
TIMESPEC_TO_TIMEVAL(&tv[0],&st.st_atim);
if(ts[1].tv_nsec == UTIME_OMIT)
TIMESPEC_TO_TIMEVAL(&tv[1],&st.st_mtim);
return 0;
}
static
inline
int
_set_utime_now_to_now(const struct timespec ts[2],
struct timeval tv[2])
{
int rv;
struct timeval now;
if(_any_timespec_is_utime_now(ts))
return 0;
rv = ::gettimeofday(&now,NULL);
if(rv == -1)
return -1;
if(ts[0].tv_nsec == UTIME_NOW)
tv[0] = now;
if(ts[1].tv_nsec == UTIME_NOW)
tv[1] = now;
return 0;
}
static
inline
int
_convert_timespec_to_timeval(const int dirfd,
const std::string &path,
const struct timespec ts[2],
struct timeval tv[2],
struct timeval *&tvp,
const int flags)
{
int rv;
if(_should_be_set_to_now(ts))
return (tvp=NULL,0);
TIMESPEC_TO_TIMEVAL(&tv[0],&ts[0]);
TIMESPEC_TO_TIMEVAL(&tv[1],&ts[1]);
rv = _set_utime_omit_to_current_value(dirfd,path,ts,tv,flags);
if(rv == -1)
return -1;
rv = _set_utime_now_to_now(ts,tv);
if(rv == -1)
return -1;
return (tvp=tv,0);
}
static
inline
int
_convert_timespec_to_timeval(const int fd,
const struct timespec ts[2],
struct timeval tv[2],
struct timeval *&tvp)
{
int rv;
if(_should_be_set_to_now(ts))
return (tvp=NULL,0);
TIMESPEC_TO_TIMEVAL(&tv[0],&ts[0]);
TIMESPEC_TO_TIMEVAL(&tv[1],&ts[1]);
rv = _set_utime_omit_to_current_value(fd,ts,tv);
if(rv == -1)
return -1;
rv = _set_utime_now_to_now(ts,tv);
if(rv == -1)
return -1;
return (tvp=tv,0);
}
namespace fs
{
static
inline
int
utime(const int dirfd,
const std::string &path,
const struct timespec ts[2],
const int flags)
{
int rv;
struct timeval tv[2];
struct timeval *tvp;
if(_flags_invalid(flags))
return (errno=EINVAL,-1);
if(_timespec_invalid(ts))
return (errno=EINVAL,-1);
if(_should_ignore(ts))
return 0;
rv = _convert_timespec_to_timeval(dirfd,path,ts,tv,tvp,flags);
if(rv == -1)
return -1;
if((flags & AT_SYMLINK_NOFOLLOW) == 0)
return ::futimesat(dirfd,path.c_str(),tvp);
if(_can_call_lutimes(dirfd,path,flags))
return ::lutimes(path.c_str(),tvp);
return (errno=ENOTSUP,-1);
}
static
inline
int
utime(const int fd,
const struct timespec ts[2])
{
int rv;
struct timeval tv[2];
struct timeval *tvp;
if(_timespec_invalid(ts))
return (errno=EINVAL,-1);
if(_should_ignore(ts))
return 0;
rv = _convert_timespec_to_timeval(fd,ts,tv,tvp);
if(rv == -1)
return -1;
return ::futimes(fd,tvp);
}
}

19
src/fs_base_utimensat.hpp → src/fs_base_utime_utimensat.hpp
View File

@ -26,10 +26,10 @@ namespace fs
static
inline
int
utimensat(const int dirfd,
const std::string &path,
const struct timespec times[2],
const int flags)
utime(const int dirfd,
const std::string &path,
const struct timespec times[2],
const int flags)
{
return ::utimensat(dirfd,path.c_str(),times,flags);
}
@ -37,14 +37,9 @@ namespace fs
static
inline
int
utimensat(const std::string &path,
const struct stat &st)
utime(const int fd,
const struct timespec times[2])
{
struct timespec times[2];
times[0] = st.st_atim;
times[1] = st.st_mtim;
return fs::utimensat(AT_FDCWD,path,times,0);
return ::futimens(fd,times);
}
}

216
src/fs_clonefile.cpp
View File

@ -30,121 +30,121 @@
#include "fs_base_open.hpp"
#include "fs_base_read.hpp"
#include "fs_base_stat.hpp"
#include "fs_base_utime.hpp"
#include "fs_base_write.hpp"
#include "fs_fadvise.hpp"
#include "fs_fallocate.hpp"
#include "fs_sendfile.hpp"
#include "fs_time.hpp"
#include "fs_xattr.hpp"
using std::string;
using std::vector;
int
writen(const int fd,
const char *buf,
const size_t count)
{
size_t nleft;
ssize_t nwritten;
nleft = count;
while(nleft > 0)
{
nwritten = fs::write(fd,buf,nleft);
if(nwritten == -1)
{
if(errno == EINTR)
continue;
return -1;
}
nleft -= nwritten;
buf += nwritten;
}
return count;
}
static
int
copyfile_rw(const int fdin,
const int fdout,
const size_t count,
const size_t blocksize)
{
ssize_t nr;
ssize_t nw;
ssize_t bufsize;
size_t totalwritten;
vector<char> buf;
bufsize = (blocksize * 16);
buf.resize(bufsize);
fs::lseek(fdin,0,SEEK_SET);
totalwritten = 0;
while(totalwritten < count)
{
nr = fs::read(fdin,&buf[0],bufsize);
if(nr == -1)
{
if(errno == EINTR)
continue;
return -1;
}
nw = writen(fdout,&buf[0],nr);
if(nw == -1)
return -1;
totalwritten += nw;
}
return count;
}
static
int
copydata(const int fdin,
const int fdout,
const size_t count,
const size_t blocksize)
{
int rv;
fs::fadvise(fdin,0,count,POSIX_FADV_WILLNEED);
fs::fadvise(fdin,0,count,POSIX_FADV_SEQUENTIAL);
fs::fallocate(fdout,0,0,count);
rv = fs::sendfile(fdin,fdout,count);
if((rv == -1) && ((errno == EINVAL) || (errno == ENOSYS)))
return ::copyfile_rw(fdin,fdout,count,blocksize);
return rv;
}
static
bool
ignorable_error(const int err)
{
switch(err)
{
case ENOTTY:
case ENOTSUP:
#if ENOTSUP != EOPNOTSUPP
case EOPNOTSUPP:
#endif
return true;
}
return false;
}
namespace fs
{
int
writen(const int fd,
const char *buf,
const size_t count)
{
size_t nleft;
ssize_t nwritten;
nleft = count;
while(nleft > 0)
{
nwritten = fs::write(fd,buf,nleft);
if(nwritten == -1)
{
if(errno == EINTR)
continue;
return -1;
}
nleft -= nwritten;
buf += nwritten;
}
return count;
}
static
int
copyfile_rw(const int fdin,
const int fdout,
const size_t count,
const size_t blocksize)
{
ssize_t nr;
ssize_t nw;
ssize_t bufsize;
size_t totalwritten;
vector<char> buf;
bufsize = (blocksize * 16);
buf.resize(bufsize);
fs::lseek(fdin,0,SEEK_SET);
totalwritten = 0;
while(totalwritten < count)
{
nr = fs::read(fdin,&buf[0],bufsize);
if(nr == -1)
{
if(errno == EINTR)
continue;
return -1;
}
nw = writen(fdout,&buf[0],nr);
if(nw == -1)
return -1;
totalwritten += nw;
}
return count;
}
static
int
copydata(const int fdin,
const int fdout,
const size_t count,
const size_t blocksize)
{
int rv;
fs::fadvise(fdin,0,count,POSIX_FADV_WILLNEED);
fs::fadvise(fdin,0,count,POSIX_FADV_SEQUENTIAL);
fs::fallocate(fdout,0,0,count);
rv = fs::sendfile(fdin,fdout,count);
if((rv == -1) && ((errno == EINVAL) || (errno == ENOSYS)))
return fs::copyfile_rw(fdin,fdout,count,blocksize);
return rv;
}
static
bool
ignorable_error(const int err)
{
switch(err)
{
case ENOTTY:
case ENOTSUP:
#if ENOTSUP != EOPNOTSUPP
case EOPNOTSUPP:
#endif
return true;
}
return false;
}
int
clonefile(const int fdin,
const int fdout)
@ -156,16 +156,16 @@ namespace fs
if(rv == -1)
return -1;
rv = copydata(fdin,fdout,stin.st_size,stin.st_blksize);
rv = ::copydata(fdin,fdout,stin.st_size,stin.st_blksize);
if(rv == -1)
return -1;
rv = fs::attr::copy(fdin,fdout);
if(rv == -1 && !ignorable_error(errno))
if((rv == -1) && !ignorable_error(errno))
return -1;
rv = fs::xattr::copy(fdin,fdout);
if(rv == -1 && !ignorable_error(errno))
if((rv == -1) && !ignorable_error(errno))
return -1;
rv = fs::fchown(fdout,stin);
@ -176,7 +176,7 @@ namespace fs
if(rv == -1)
return -1;
rv = fs::utimes(fdout,stin);
rv = fs::utime(fdout,stin);
if(rv == -1)
return -1;

44
src/fs_clonepath.cpp
View File

@ -22,31 +22,31 @@
#include "fs_base_chown.hpp"
#include "fs_base_mkdir.hpp"
#include "fs_base_stat.hpp"
#include "fs_base_utimensat.hpp"
#include "fs_base_utime.hpp"
#include "fs_path.hpp"
#include "fs_xattr.hpp"
using std::string;
static
bool
ignorable_error(const int err)
{
switch(err)
{
case ENOTTY:
case ENOTSUP:
#if ENOTSUP != EOPNOTSUPP
case EOPNOTSUPP:
#endif
return true;
}
return false;
}
namespace fs
{
static
bool
ignorable_error(const int err)
{
switch(err)
{
case ENOTTY:
case ENOTSUP:
#if ENOTSUP != EOPNOTSUPP
case EOPNOTSUPP:
#endif
return true;
}
return false;
}
int
clonepath(const string &fromsrc,
const string &tosrc,
@ -72,7 +72,7 @@ namespace fs
if(rv == -1)
return -1;
else if(!S_ISDIR(st.st_mode))
return (errno = ENOTDIR,-1);
return (errno=ENOTDIR,-1);
fs::path::make(&tosrc,relative,topath);
rv = fs::mkdir(topath,st.st_mode);
@ -88,18 +88,18 @@ namespace fs
// It may not support it... it's fine...
rv = fs::attr::copy(frompath,topath);
if(rv == -1 && !ignorable_error(errno))
if((rv == -1) && !ignorable_error(errno))
return -1;
rv = fs::xattr::copy(frompath,topath);
if(rv == -1 && !ignorable_error(errno))
if((rv == -1) && !ignorable_error(errno))
return -1;
rv = fs::chown(topath,st);
if(rv == -1)
return -1;
rv = fs::utimensat(topath,st);
rv = fs::utime(topath,st);
if(rv == -1)
return -1;

21
src/fs_time.cpp
View File

@ -1,21 +0,0 @@
/*
Copyright (c) 2016, 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.
*/
#ifdef __linux__
# include "fs_time_futimens.icpp"
#else
# include "fs_time_futimes.icpp"
#endif

22
src/fs_time.hpp
View File

@ -1,22 +0,0 @@
/*
Copyright (c) 2016, 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.
*/
namespace fs
{
int
utimes(const int fd,
const struct stat &st);
}

33
src/fs_time_futimes.icpp
View File

@ -1,33 +0,0 @@
/*
Copyright (c) 2016, 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 <sys/stat.h>
#include <sys/time.h>
namespace fs
{
int
utimes(const int fd,
const struct stat &st)
{
struct timeval times[2];
TIMESPEC_TO_TIMEVAL(&times[0],&st.st_atim);
TIMESPEC_TO_TIMEVAL(&times[1],&st.st_mtim);
return ::futimes(fd,times);
}
}

4
src/utimens.cpp
View File

@ -23,7 +23,7 @@
#include "config.hpp"
#include "errno.hpp"
#include "fs_base_utimensat.hpp"
#include "fs_base_utime.hpp"
#include "fs_path.hpp"
#include "rv.hpp"
#include "rwlock.hpp"
@ -45,7 +45,7 @@ _utimens_loop_core(const string *basepath,
fs::path::make(basepath,fusepath,fullpath);
rv = fs::utimensat(AT_FDCWD,fullpath,ts,AT_SYMLINK_NOFOLLOW);
rv = fs::lutime(fullpath,ts);
return calc_error(rv,error,errno);
}