mirror of
https://github.com/fish-shell/fish-shell.git
synced 2024-11-23 18:56:51 +08:00
Kurtis Rader
parent
93e6f57dfc
commit
9ac78e06b4
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@ -2,6 +2,7 @@
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#include "config.h" // IWYU pragma: keep
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#include <errno.h>
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#include <stddef.h>
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#include <sys/resource.h>
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#include <wchar.h>
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@ -9,6 +10,7 @@
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#include "common.h"
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#include "fallback.h" // IWYU pragma: keep
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#include "io.h"
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#include "proc.h"
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#include "util.h"
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#include "wgetopt.h"
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#include "wutil.h" // IWYU pragma: keep
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@ -120,14 +122,11 @@ static const wchar_t *get_desc(int what) {
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/// Set the new value of the specified resource limit. This function does _not_ multiply the limit
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// value by the multiplier constant used by the commandline ulimit.
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static int set(int resource, int hard, int soft, rlim_t value, io_streams_t &streams) {
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static int set_limit(int resource, int hard, int soft, rlim_t value, io_streams_t &streams) {
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struct rlimit ls;
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getrlimit(resource, &ls);
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if (hard) {
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ls.rlim_max = value;
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}
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if (hard) ls.rlim_max = value;
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if (soft) {
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ls.rlim_cur = value;
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@ -139,185 +138,170 @@ static int set(int resource, int hard, int soft, rlim_t value, io_streams_t &str
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}
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if (setrlimit(resource, &ls)) {
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if (errno == EPERM)
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if (errno == EPERM) {
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streams.err.append_format(
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L"ulimit: Permission denied when changing resource of type '%ls'\n",
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get_desc(resource));
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else
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} else {
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builtin_wperror(L"ulimit", streams);
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return 1;
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}
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return STATUS_BUILTIN_ERROR;
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}
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return 0;
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return STATUS_BUILTIN_OK;
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}
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/// The ulimit builtin, used for setting resource limits.
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int builtin_ulimit(parser_t &parser, io_streams_t &streams, wchar_t **argv) {
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wgetopter_t w;
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int hard = 0;
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int soft = 0;
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int what = RLIMIT_FSIZE;
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int report_all = 0;
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wchar_t *cmd = argv[0];
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int argc = builtin_count_args(argv);
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bool report_all = false;
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bool hard = false;
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bool soft = false;
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int what = RLIMIT_FSIZE;
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w.woptind = 0;
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while (1) {
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static const struct woption long_options[] = {
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{L"all", no_argument, 0, 'a'},
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{L"hard", no_argument, 0, 'H'},
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{L"soft", no_argument, 0, 'S'},
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{L"core-size", no_argument, 0, 'c'},
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{L"data-size", no_argument, 0, 'd'},
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{L"file-size", no_argument, 0, 'f'},
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{L"lock-size", no_argument, 0, 'l'},
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{L"resident-set-size", no_argument, 0, 'm'},
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{L"file-descriptor-count", no_argument, 0, 'n'},
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{L"stack-size", no_argument, 0, 's'},
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{L"cpu-time", no_argument, 0, 't'},
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{L"process-count", no_argument, 0, 'u'},
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{L"virtual-memory-size", no_argument, 0, 'v'},
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{L"help", no_argument, 0, 'h'},
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{0, 0, 0, 0}};
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int opt_index = 0;
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int opt = w.wgetopt_long(argc, argv, L"aHScdflmnstuvh", long_options, &opt_index);
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if (opt == -1) break;
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const wchar_t *short_options = L":HSacdflmnstuvh";
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const struct woption long_options[] = {{L"all", no_argument, NULL, 'a'},
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{L"hard", no_argument, NULL, 'H'},
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{L"soft", no_argument, NULL, 'S'},
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{L"core-size", no_argument, NULL, 'c'},
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{L"data-size", no_argument, NULL, 'd'},
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{L"file-size", no_argument, NULL, 'f'},
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{L"lock-size", no_argument, NULL, 'l'},
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{L"resident-set-size", no_argument, NULL, 'm'},
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{L"file-descriptor-count", no_argument, NULL, 'n'},
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{L"stack-size", no_argument, NULL, 's'},
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{L"cpu-time", no_argument, NULL, 't'},
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{L"process-count", no_argument, NULL, 'u'},
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{L"virtual-memory-size", no_argument, NULL, 'v'},
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{L"help", no_argument, NULL, 'h'},
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{NULL, 0, NULL, 0}};
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int opt;
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wgetopter_t w;
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while ((opt = w.wgetopt_long(argc, argv, short_options, long_options, NULL)) != -1) {
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switch (opt) {
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case 0: {
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if (long_options[opt_index].flag != 0) break;
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streams.err.append_format(BUILTIN_ERR_UNKNOWN, argv[0],
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long_options[opt_index].name);
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builtin_print_help(parser, streams, argv[0], streams.err);
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return 1;
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}
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case L'a': {
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report_all = 1;
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case 'a': {
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report_all = true;
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break;
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}
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case L'H': {
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hard = 1;
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case 'H': {
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hard = true;
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break;
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}
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case L'S': {
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soft = 1;
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case 'S': {
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soft = true;
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break;
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}
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case L'c': {
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case 'c': {
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what = RLIMIT_CORE;
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break;
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}
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case L'd': {
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case 'd': {
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what = RLIMIT_DATA;
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break;
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}
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case L'f': {
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case 'f': {
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what = RLIMIT_FSIZE;
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break;
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}
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#ifdef RLIMIT_MEMLOCK
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case L'l': {
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case 'l': {
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what = RLIMIT_MEMLOCK;
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break;
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}
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#endif
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#ifdef RLIMIT_RSS
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case L'm': {
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case 'm': {
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what = RLIMIT_RSS;
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break;
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}
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#endif
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case L'n': {
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case 'n': {
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what = RLIMIT_NOFILE;
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break;
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}
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case L's': {
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case 's': {
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what = RLIMIT_STACK;
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break;
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}
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case L't': {
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case 't': {
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what = RLIMIT_CPU;
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break;
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}
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#ifdef RLIMIT_NPROC
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case L'u': {
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case 'u': {
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what = RLIMIT_NPROC;
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break;
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}
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#endif
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#ifdef RLIMIT_AS
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case L'v': {
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case 'v': {
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what = RLIMIT_AS;
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break;
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}
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#endif
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case L'h': {
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builtin_print_help(parser, streams, argv[0], streams.out);
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case 'h': {
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builtin_print_help(parser, streams, cmd, streams.out);
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return 0;
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}
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case L'?': {
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builtin_unknown_option(parser, streams, argv[0], argv[w.woptind - 1]);
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return 1;
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case ':': {
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streams.err.append_format(BUILTIN_ERR_MISSING, cmd, argv[w.woptind - 1]);
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return STATUS_BUILTIN_ERROR;
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}
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case '?': {
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builtin_unknown_option(parser, streams, cmd, argv[w.woptind - 1]);
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return STATUS_BUILTIN_ERROR;
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}
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default: {
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DIE("unexpected opt");
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DIE("unexpected retval from wgetopt_long");
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break;
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}
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}
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}
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if (report_all) {
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if (argc - w.woptind == 0) {
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print_all(hard, streams);
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} else {
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streams.err.append(argv[0]);
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streams.err.append(L": Too many arguments\n");
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builtin_print_help(parser, streams, argv[0], streams.err);
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return 1;
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}
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return 0;
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print_all(hard, streams);
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return STATUS_BUILTIN_OK;
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}
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int arg_count = argc - w.woptind;
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if (arg_count == 0) {
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// Show current limit value.
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print(what, hard, streams);
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} else if (arg_count == 1) {
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// Change current limit value.
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rlim_t new_limit;
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wchar_t *end;
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// Set both hard and soft limits if nothing else was specified.
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if (!(hard + soft)) {
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hard = soft = 1;
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}
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if (wcscasecmp(argv[w.woptind], L"unlimited") == 0) {
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new_limit = RLIM_INFINITY;
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} else if (wcscasecmp(argv[w.woptind], L"hard") == 0) {
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new_limit = get(what, 1);
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} else if (wcscasecmp(argv[w.woptind], L"soft") == 0) {
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new_limit = get(what, soft);
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} else {
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errno = 0;
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new_limit = wcstol(argv[w.woptind], &end, 10);
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if (errno || *end) {
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streams.err.append_format(L"%ls: Invalid limit '%ls'\n", argv[0], argv[w.woptind]);
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builtin_print_help(parser, streams, argv[0], streams.err);
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return 1;
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}
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new_limit *= get_multiplier(what);
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}
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return set(what, hard, soft, new_limit, streams);
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return STATUS_BUILTIN_OK;
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} else if (arg_count != 1) {
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streams.err.append_format(BUILTIN_ERR_TOO_MANY_ARGUMENTS, cmd);
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builtin_print_help(parser, streams, cmd, streams.err);
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return STATUS_BUILTIN_ERROR;
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}
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streams.err.append(argv[0]);
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streams.err.append(L": Too many arguments\n");
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builtin_print_help(parser, streams, argv[0], streams.err);
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return 1;
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// Change current limit value.
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if (!hard && !soft) {
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// Set both hard and soft limits if neither was specified.
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hard = soft = true;
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}
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rlim_t new_limit;
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if (*argv[w.woptind] == L'\0') {
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streams.err.append_format(_(L"%ls: New limit cannot be an empty string\n"), cmd);
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builtin_print_help(parser, streams, cmd, streams.err);
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return STATUS_BUILTIN_ERROR;
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} else if (wcscasecmp(argv[w.woptind], L"unlimited") == 0) {
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new_limit = RLIM_INFINITY;
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} else if (wcscasecmp(argv[w.woptind], L"hard") == 0) {
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new_limit = get(what, 1);
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} else if (wcscasecmp(argv[w.woptind], L"soft") == 0) {
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new_limit = get(what, soft);
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} else {
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wchar_t *end;
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new_limit = wcstol(argv[w.woptind], &end, 10);
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if (*end) {
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streams.err.append_format(_(L"%ls: Invalid limit '%ls'\n"), cmd, argv[w.woptind]);
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builtin_print_help(parser, streams, cmd, streams.err);
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return STATUS_BUILTIN_ERROR;
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}
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new_limit *= get_multiplier(what);
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}
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return set_limit(what, hard, soft, new_limit, streams);
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}
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