Imported from ../bash-4.0-rc1.tar.gz.
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Jari Aalto
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666 changed files with 188710 additions and 54674 deletions
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This file is ulimit.def, from which is created ulimit.c.
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It implements the builtin "ulimit" in Bash.
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Copyright (C) 1987-2005 Free Software Foundation, Inc.
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Copyright (C) 1987-2009 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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Bash is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Bash is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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Bash is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with Bash; see the file COPYING. If not, write to the Free Software
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Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA.
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You should have received a copy of the GNU General Public License
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along with Bash. If not, see <http://www.gnu.org/licenses/>.
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$PRODUCES ulimit.c
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$BUILTIN ulimit
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$FUNCTION ulimit_builtin
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$DEPENDS_ON !_MINIX
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$SHORT_DOC ulimit [-SHacdfilmnpqstuvx] [limit]
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Ulimit provides control over the resources available to processes
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started by the shell, on systems that allow such control. If an
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option is given, it is interpreted as follows:
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$SHORT_DOC ulimit [-SHacdefilmnpqrstuvx] [limit]
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Modify shell resource limits.
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-S use the `soft' resource limit
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-H use the `hard' resource limit
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-a all current limits are reported
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-c the maximum size of core files created
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-d the maximum size of a process's data segment
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-e the maximum scheduling priority (`nice')
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-f the maximum size of files written by the shell and its children
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-i the maximum number of pending signals
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-l the maximum size a process may lock into memory
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-m the maximum resident set size
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-n the maximum number of open file descriptors
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-p the pipe buffer size
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-q the maximum number of bytes in POSIX message queues
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-r the maximum real-time scheduling priority
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-s the maximum stack size
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-t the maximum amount of cpu time in seconds
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-u the maximum number of user processes
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-v the size of virtual memory
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-x the maximum number of file locks
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Provides control over the resources available to the shell and processes
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it creates, on systems that allow such control.
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If LIMIT is given, it is the new value of the specified resource;
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the special LIMIT values `soft', `hard', and `unlimited' stand for
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the current soft limit, the current hard limit, and no limit, respectively.
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Otherwise, the current value of the specified resource is printed.
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If no option is given, then -f is assumed. Values are in 1024-byte
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increments, except for -t, which is in seconds, -p, which is in
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increments of 512 bytes, and -u, which is an unscaled number of
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processes.
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Options:
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-S use the `soft' resource limit
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-H use the `hard' resource limit
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-a all current limits are reported
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-b the socket buffer size
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-c the maximum size of core files created
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-d the maximum size of a process's data segment
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-e the maximum scheduling priority (`nice')
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-f the maximum size of files written by the shell and its children
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-i the maximum number of pending signals
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-l the maximum size a process may lock into memory
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-m the maximum resident set size
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-n the maximum number of open file descriptors
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-p the pipe buffer size
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-q the maximum number of bytes in POSIX message queues
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-r the maximum real-time scheduling priority
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-s the maximum stack size
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-t the maximum amount of cpu time in seconds
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-u the maximum number of user processes
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-v the size of virtual memory
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-x the maximum number of file locks
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If LIMIT is given, it is the new value of the specified resource; the
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special LIMIT values `soft', `hard', and `unlimited' stand for the
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current soft limit, the current hard limit, and no limit, respectively.
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Otherwise, the current value of the specified resource is printed. If
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no option is given, then -f is assumed.
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Values are in 1024-byte increments, except for -t, which is in seconds,
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-p, which is in increments of 512 bytes, and -u, which is an unscaled
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number of processes.
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Exit Status:
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Returns success unless an invalid option is supplied or an error occurs.
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$END
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#if !defined (_MINIX)
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@ -98,7 +104,7 @@ extern int errno;
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# if defined (HPUX) && defined (RLIMIT_NEEDS_KERNEL)
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# undef _KERNEL
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# endif
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#else
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#elif defined (HAVE_SYS_TIMES_H)
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# include <sys/times.h>
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#endif
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@ -172,6 +178,14 @@ extern int errno;
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#define LIMIT_HARD 0x01
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#define LIMIT_SOFT 0x02
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/* "Blocks" are defined as 512 bytes when in Posix mode and 1024 bytes
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otherwise. */
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#define POSIXBLK -2
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#define BLOCKSIZE(x) (((x) == POSIXBLK) ? (posixly_correct ? 512 : 1024) : (x))
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extern int posixly_correct;
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static int _findlim __P((int));
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static int ulimit_internal __P((int, char *, int, int));
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@ -193,13 +207,19 @@ typedef struct {
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int option; /* The ulimit option for this limit. */
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int parameter; /* Parameter to pass to get_limit (). */
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int block_factor; /* Blocking factor for specific limit. */
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char *description; /* Descriptive string to output. */
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char *units; /* scale */
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const char * const description; /* Descriptive string to output. */
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const char * const units; /* scale */
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} RESOURCE_LIMITS;
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static RESOURCE_LIMITS limits[] = {
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#ifdef RLIMIT_PTHREAD
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{ 'T', RLIMIT_PTHREAD, 1, "number of threads", (char *)NULL },
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#endif
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#ifdef RLIMIT_SBSIZE
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{ 'b', RLIMIT_SBSIZE, 1, "socket buffer size", "bytes" },
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#endif
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#ifdef RLIMIT_CORE
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{ 'c', RLIMIT_CORE, 1024, "core file size", "blocks" },
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{ 'c', RLIMIT_CORE, POSIXBLK, "core file size", "blocks" },
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#endif
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#ifdef RLIMIT_DATA
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{ 'd', RLIMIT_DATA, 1024, "data seg size", "kbytes" },
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@ -207,7 +227,7 @@ static RESOURCE_LIMITS limits[] = {
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#ifdef RLIMIT_NICE
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{ 'e', RLIMIT_NICE, 1, "scheduling priority", (char *)NULL },
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#endif
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{ 'f', RLIMIT_FILESIZE, 1024, "file size", "blocks" },
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{ 'f', RLIMIT_FILESIZE, POSIXBLK, "file size", "blocks" },
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#ifdef RLIMIT_SIGPENDING
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{ 'i', RLIMIT_SIGPENDING, 1, "pending signals", (char *)NULL },
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#endif
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@ -356,7 +376,7 @@ ulimit_builtin (list)
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}
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#endif
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print_all_limits (mode == 0 ? LIMIT_SOFT : mode);
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return (EXECUTION_SUCCESS);
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return (sh_chkwrite (EXECUTION_SUCCESS));
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}
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/* default is `ulimit -f' */
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@ -425,12 +445,12 @@ ulimit_internal (cmd, cmdarg, mode, multiple)
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else if (all_digits (cmdarg))
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{
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limit = string_to_rlimtype (cmdarg);
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block_factor = limits[limind].block_factor;
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block_factor = BLOCKSIZE(limits[limind].block_factor);
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real_limit = limit * block_factor;
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if ((real_limit / block_factor) != limit)
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{
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sh_erange (cmdarg, "limit");
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sh_erange (cmdarg, _("limit"));
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return (EXECUTION_FAILURE);
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}
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}
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@ -687,7 +707,9 @@ printone (limind, curlim, pdesc)
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int pdesc;
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{
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char unitstr[64];
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int factor;
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factor = BLOCKSIZE(limits[limind].block_factor);
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if (pdesc)
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{
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if (limits[limind].units)
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@ -704,7 +726,7 @@ printone (limind, curlim, pdesc)
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else if (curlim == RLIM_SAVED_CUR)
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puts ("soft");
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else
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print_rlimtype ((curlim / limits[limind].block_factor), 1);
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print_rlimtype ((curlim / factor), 1);
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}
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/* Set all limits to NEWLIM. NEWLIM currently must be RLIM_INFINITY, which
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@ -740,7 +762,7 @@ set_all_limits (mode, newlim)
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for (retval = i = 0; limits[i].option > 0; i++)
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if (set_limit (i, newlim, mode) < 0)
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{
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builtin_error ("%s: cannot modify limit: %s", limits[i].description,
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builtin_error (_("%s: cannot modify limit: %s"), limits[i].description,
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strerror (errno));
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retval = 1;
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}
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