| 1 | This file is ulimit.def, from which is created ulimit.c.
|
|---|
| 2 | It implements the builtin "ulimit" in Bash.
|
|---|
| 3 |
|
|---|
| 4 | Copyright (C) 1987-2005 Free Software Foundation, Inc.
|
|---|
| 5 |
|
|---|
| 6 | This file is part of GNU Bash, the Bourne Again SHell.
|
|---|
| 7 |
|
|---|
| 8 | Bash is free software; you can redistribute it and/or modify it under
|
|---|
| 9 | the terms of the GNU General Public License as published by the Free
|
|---|
| 10 | Software Foundation; either version 2, or (at your option) any later
|
|---|
| 11 | version.
|
|---|
| 12 |
|
|---|
| 13 | Bash is distributed in the hope that it will be useful, but WITHOUT ANY
|
|---|
| 14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|---|
| 15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|---|
| 16 | for more details.
|
|---|
| 17 |
|
|---|
| 18 | You should have received a copy of the GNU General Public License along
|
|---|
| 19 | with Bash; see the file COPYING. If not, write to the Free Software
|
|---|
| 20 | Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA.
|
|---|
| 21 |
|
|---|
| 22 | $PRODUCES ulimit.c
|
|---|
| 23 |
|
|---|
| 24 | $BUILTIN ulimit
|
|---|
| 25 | $FUNCTION ulimit_builtin
|
|---|
| 26 | $DEPENDS_ON !_MINIX
|
|---|
| 27 | $SHORT_DOC ulimit [-SHacdfilmnpqstuvx] [limit]
|
|---|
| 28 | Ulimit provides control over the resources available to processes
|
|---|
| 29 | started by the shell, on systems that allow such control. If an
|
|---|
| 30 | option is given, it is interpreted as follows:
|
|---|
| 31 |
|
|---|
| 32 | -S use the `soft' resource limit
|
|---|
| 33 | -H use the `hard' resource limit
|
|---|
| 34 | -a all current limits are reported
|
|---|
| 35 | -c the maximum size of core files created
|
|---|
| 36 | -d the maximum size of a process's data segment
|
|---|
| 37 | -f the maximum size of files created by the shell
|
|---|
| 38 | -i the maximum number of pending signals
|
|---|
| 39 | -l the maximum size a process may lock into memory
|
|---|
| 40 | -m the maximum resident set size
|
|---|
| 41 | -n the maximum number of open file descriptors
|
|---|
| 42 | -p the pipe buffer size
|
|---|
| 43 | -q the maximum number of bytes in POSIX message queues
|
|---|
| 44 | -s the maximum stack size
|
|---|
| 45 | -t the maximum amount of cpu time in seconds
|
|---|
| 46 | -u the maximum number of user processes
|
|---|
| 47 | -v the size of virtual memory
|
|---|
| 48 | -x the maximum number of file locks
|
|---|
| 49 |
|
|---|
| 50 | If LIMIT is given, it is the new value of the specified resource;
|
|---|
| 51 | the special LIMIT values `soft', `hard', and `unlimited' stand for
|
|---|
| 52 | the current soft limit, the current hard limit, and no limit, respectively.
|
|---|
| 53 | Otherwise, the current value of the specified resource is printed.
|
|---|
| 54 | If no option is given, then -f is assumed. Values are in 1024-byte
|
|---|
| 55 | increments, except for -t, which is in seconds, -p, which is in
|
|---|
| 56 | increments of 512 bytes, and -u, which is an unscaled number of
|
|---|
| 57 | processes.
|
|---|
| 58 | $END
|
|---|
| 59 |
|
|---|
| 60 | #if !defined (_MINIX)
|
|---|
| 61 |
|
|---|
| 62 | #include <config.h>
|
|---|
| 63 |
|
|---|
| 64 | #include "../bashtypes.h"
|
|---|
| 65 | #ifndef _MINIX
|
|---|
| 66 | # include <sys/param.h>
|
|---|
| 67 | #endif
|
|---|
| 68 |
|
|---|
| 69 | #if defined (HAVE_UNISTD_H)
|
|---|
| 70 | # include <unistd.h>
|
|---|
| 71 | #endif
|
|---|
| 72 |
|
|---|
| 73 | #include <stdio.h>
|
|---|
| 74 | #include <errno.h>
|
|---|
| 75 |
|
|---|
| 76 | #include "../bashintl.h"
|
|---|
| 77 |
|
|---|
| 78 | #include "../shell.h"
|
|---|
| 79 | #include "common.h"
|
|---|
| 80 | #include "bashgetopt.h"
|
|---|
| 81 | #include "pipesize.h"
|
|---|
| 82 |
|
|---|
| 83 | #if !defined (errno)
|
|---|
| 84 | extern int errno;
|
|---|
| 85 | #endif
|
|---|
| 86 |
|
|---|
| 87 | /* For some reason, HPUX chose to make these definitions visible only if
|
|---|
| 88 | _KERNEL is defined, so we define _KERNEL before including <sys/resource.h>
|
|---|
| 89 | and #undef it afterward. */
|
|---|
| 90 | #if defined (HAVE_RESOURCE)
|
|---|
| 91 | # include <sys/time.h>
|
|---|
| 92 | # if defined (HPUX) && defined (RLIMIT_NEEDS_KERNEL)
|
|---|
| 93 | # define _KERNEL
|
|---|
| 94 | # endif
|
|---|
| 95 | # include <sys/resource.h>
|
|---|
| 96 | # if defined (HPUX) && defined (RLIMIT_NEEDS_KERNEL)
|
|---|
| 97 | # undef _KERNEL
|
|---|
| 98 | # endif
|
|---|
| 99 | #else
|
|---|
| 100 | # include <sys/times.h>
|
|---|
| 101 | #endif
|
|---|
| 102 |
|
|---|
| 103 | #if defined (HAVE_LIMITS_H)
|
|---|
| 104 | # include <limits.h>
|
|---|
| 105 | #endif
|
|---|
| 106 |
|
|---|
| 107 | /* Check for the most basic symbols. If they aren't present, this
|
|---|
| 108 | system's <sys/resource.h> isn't very useful to us. */
|
|---|
| 109 | #if !defined (RLIMIT_FSIZE) || !defined (HAVE_GETRLIMIT)
|
|---|
| 110 | # undef HAVE_RESOURCE
|
|---|
| 111 | #endif
|
|---|
| 112 |
|
|---|
| 113 | #if !defined (RLIMTYPE)
|
|---|
| 114 | # define RLIMTYPE long
|
|---|
| 115 | # define string_to_rlimtype(s) strtol(s, (char **)NULL, 10)
|
|---|
| 116 | # define print_rlimtype(num, nl) printf ("%ld%s", num, nl ? "\n" : "")
|
|---|
| 117 | #endif
|
|---|
| 118 |
|
|---|
| 119 | /* Some systems use RLIMIT_NOFILE, others use RLIMIT_OFILE */
|
|---|
| 120 | #if defined (HAVE_RESOURCE) && defined (RLIMIT_OFILE) && !defined (RLIMIT_NOFILE)
|
|---|
| 121 | # define RLIMIT_NOFILE RLIMIT_OFILE
|
|---|
| 122 | #endif /* HAVE_RESOURCE && RLIMIT_OFILE && !RLIMIT_NOFILE */
|
|---|
| 123 |
|
|---|
| 124 | /* Some systems have these, some do not. */
|
|---|
| 125 | #ifdef RLIMIT_FSIZE
|
|---|
| 126 | # define RLIMIT_FILESIZE RLIMIT_FSIZE
|
|---|
| 127 | #else
|
|---|
| 128 | # define RLIMIT_FILESIZE 256
|
|---|
| 129 | #endif
|
|---|
| 130 |
|
|---|
| 131 | #define RLIMIT_PIPESIZE 257
|
|---|
| 132 |
|
|---|
| 133 | #ifdef RLIMIT_NOFILE
|
|---|
| 134 | # define RLIMIT_OPENFILES RLIMIT_NOFILE
|
|---|
| 135 | #else
|
|---|
| 136 | # define RLIMIT_OPENFILES 258
|
|---|
| 137 | #endif
|
|---|
| 138 |
|
|---|
| 139 | #ifdef RLIMIT_VMEM
|
|---|
| 140 | # define RLIMIT_VIRTMEM RLIMIT_VMEM
|
|---|
| 141 | # define RLIMIT_VMBLKSZ 1024
|
|---|
| 142 | #else
|
|---|
| 143 | # ifdef RLIMIT_AS
|
|---|
| 144 | # define RLIMIT_VIRTMEM RLIMIT_AS
|
|---|
| 145 | # define RLIMIT_VMBLKSZ 1024
|
|---|
| 146 | # else
|
|---|
| 147 | # define RLIMIT_VIRTMEM 259
|
|---|
| 148 | # define RLIMIT_VMBLKSZ 1
|
|---|
| 149 | # endif
|
|---|
| 150 | #endif
|
|---|
| 151 |
|
|---|
| 152 | #ifdef RLIMIT_NPROC
|
|---|
| 153 | # define RLIMIT_MAXUPROC RLIMIT_NPROC
|
|---|
| 154 | #else
|
|---|
| 155 | # define RLIMIT_MAXUPROC 260
|
|---|
| 156 | #endif
|
|---|
| 157 |
|
|---|
| 158 | #if !defined (RLIM_INFINITY)
|
|---|
| 159 | # define RLIM_INFINITY 0x7fffffff
|
|---|
| 160 | #endif
|
|---|
| 161 |
|
|---|
| 162 | #if !defined (RLIM_SAVED_CUR)
|
|---|
| 163 | # define RLIM_SAVED_CUR RLIM_INFINITY
|
|---|
| 164 | #endif
|
|---|
| 165 |
|
|---|
| 166 | #if !defined (RLIM_SAVED_MAX)
|
|---|
| 167 | # define RLIM_SAVED_MAX RLIM_INFINITY
|
|---|
| 168 | #endif
|
|---|
| 169 |
|
|---|
| 170 | #define LIMIT_HARD 0x01
|
|---|
| 171 | #define LIMIT_SOFT 0x02
|
|---|
| 172 |
|
|---|
| 173 | static int _findlim __P((int));
|
|---|
| 174 |
|
|---|
| 175 | static int ulimit_internal __P((int, char *, int, int));
|
|---|
| 176 |
|
|---|
| 177 | static int get_limit __P((int, RLIMTYPE *, RLIMTYPE *));
|
|---|
| 178 | static int set_limit __P((int, RLIMTYPE, int));
|
|---|
| 179 |
|
|---|
| 180 | static void printone __P((int, RLIMTYPE, int));
|
|---|
| 181 | static void print_all_limits __P((int));
|
|---|
| 182 |
|
|---|
| 183 | static int set_all_limits __P((int, RLIMTYPE));
|
|---|
| 184 |
|
|---|
| 185 | static int filesize __P((RLIMTYPE *));
|
|---|
| 186 | static int pipesize __P((RLIMTYPE *));
|
|---|
| 187 | static int getmaxuprc __P((RLIMTYPE *));
|
|---|
| 188 | static int getmaxvm __P((RLIMTYPE *, RLIMTYPE *));
|
|---|
| 189 |
|
|---|
| 190 | typedef struct {
|
|---|
| 191 | int option; /* The ulimit option for this limit. */
|
|---|
| 192 | int parameter; /* Parameter to pass to get_limit (). */
|
|---|
| 193 | int block_factor; /* Blocking factor for specific limit. */
|
|---|
| 194 | char *description; /* Descriptive string to output. */
|
|---|
| 195 | char *units; /* scale */
|
|---|
| 196 | } RESOURCE_LIMITS;
|
|---|
| 197 |
|
|---|
| 198 | static RESOURCE_LIMITS limits[] = {
|
|---|
| 199 | #ifdef RLIMIT_CORE
|
|---|
| 200 | { 'c', RLIMIT_CORE, 1024, "core file size", "blocks" },
|
|---|
| 201 | #endif
|
|---|
| 202 | #ifdef RLIMIT_DATA
|
|---|
| 203 | { 'd', RLIMIT_DATA, 1024, "data seg size", "kbytes" },
|
|---|
| 204 | #endif
|
|---|
| 205 | { 'f', RLIMIT_FILESIZE, 1024, "file size", "blocks" },
|
|---|
| 206 | #ifdef RLIMIT_SIGPENDING
|
|---|
| 207 | { 'i', RLIMIT_SIGPENDING, 1, "pending signals", (char *)NULL },
|
|---|
| 208 | #endif
|
|---|
| 209 | #ifdef RLIMIT_MEMLOCK
|
|---|
| 210 | { 'l', RLIMIT_MEMLOCK, 1024, "max locked memory", "kbytes" },
|
|---|
| 211 | #endif
|
|---|
| 212 | #ifdef RLIMIT_RSS
|
|---|
| 213 | { 'm', RLIMIT_RSS, 1024, "max memory size", "kbytes" },
|
|---|
| 214 | #endif /* RLIMIT_RSS */
|
|---|
| 215 | { 'n', RLIMIT_OPENFILES, 1, "open files", (char *)NULL},
|
|---|
| 216 | { 'p', RLIMIT_PIPESIZE, 512, "pipe size", "512 bytes" },
|
|---|
| 217 | #ifdef RLIMIT_MSGQUEUE
|
|---|
| 218 | { 'q', RLIMIT_MSGQUEUE, 1, "POSIX message queues", "bytes" },
|
|---|
| 219 | #endif
|
|---|
| 220 | #ifdef RLIMIT_STACK
|
|---|
| 221 | { 's', RLIMIT_STACK, 1024, "stack size", "kbytes" },
|
|---|
| 222 | #endif
|
|---|
| 223 | #ifdef RLIMIT_CPU
|
|---|
| 224 | { 't', RLIMIT_CPU, 1, "cpu time", "seconds" },
|
|---|
| 225 | #endif /* RLIMIT_CPU */
|
|---|
| 226 | { 'u', RLIMIT_MAXUPROC, 1, "max user processes", (char *)NULL },
|
|---|
| 227 | #if defined (HAVE_RESOURCE)
|
|---|
| 228 | { 'v', RLIMIT_VIRTMEM, RLIMIT_VMBLKSZ, "virtual memory", "kbytes" },
|
|---|
| 229 | #endif
|
|---|
| 230 | #ifdef RLIMIT_SWAP
|
|---|
| 231 | { 'w', RLIMIT_SWAP, 1024, "swap size", "kbytes" },
|
|---|
| 232 | #endif
|
|---|
| 233 | #ifdef RLIMIT_LOCKS
|
|---|
| 234 | { 'x', RLIMIT_LOCKS, 1, "file locks", (char *)NULL },
|
|---|
| 235 | #endif
|
|---|
| 236 | { -1, -1, -1, (char *)NULL, (char *)NULL }
|
|---|
| 237 | };
|
|---|
| 238 | #define NCMDS (sizeof(limits) / sizeof(limits[0]))
|
|---|
| 239 |
|
|---|
| 240 | typedef struct _cmd {
|
|---|
| 241 | int cmd;
|
|---|
| 242 | char *arg;
|
|---|
| 243 | } ULCMD;
|
|---|
| 244 |
|
|---|
| 245 | static ULCMD *cmdlist;
|
|---|
| 246 | static int ncmd;
|
|---|
| 247 | static int cmdlistsz;
|
|---|
| 248 |
|
|---|
| 249 | #if !defined (HAVE_RESOURCE) && !defined (HAVE_ULIMIT)
|
|---|
| 250 | long
|
|---|
| 251 | ulimit (cmd, newlim)
|
|---|
| 252 | int cmd;
|
|---|
| 253 | long newlim;
|
|---|
| 254 | {
|
|---|
| 255 | errno = EINVAL;
|
|---|
| 256 | return -1;
|
|---|
| 257 | }
|
|---|
| 258 | #endif /* !HAVE_RESOURCE && !HAVE_ULIMIT */
|
|---|
| 259 |
|
|---|
| 260 | static int
|
|---|
| 261 | _findlim (opt)
|
|---|
| 262 | int opt;
|
|---|
| 263 | {
|
|---|
| 264 | register int i;
|
|---|
| 265 |
|
|---|
| 266 | for (i = 0; limits[i].option > 0; i++)
|
|---|
| 267 | if (limits[i].option == opt)
|
|---|
| 268 | return i;
|
|---|
| 269 | return -1;
|
|---|
| 270 | }
|
|---|
| 271 |
|
|---|
| 272 | static char optstring[4 + 2 * NCMDS];
|
|---|
| 273 |
|
|---|
| 274 | /* Report or set limits associated with certain per-process resources.
|
|---|
| 275 | See the help documentation in builtins.c for a full description. */
|
|---|
| 276 | int
|
|---|
| 277 | ulimit_builtin (list)
|
|---|
| 278 | register WORD_LIST *list;
|
|---|
| 279 | {
|
|---|
| 280 | register char *s;
|
|---|
| 281 | int c, limind, mode, opt, all_limits;
|
|---|
| 282 |
|
|---|
| 283 | mode = 0;
|
|---|
| 284 |
|
|---|
| 285 | all_limits = 0;
|
|---|
| 286 |
|
|---|
| 287 | /* Idea stolen from pdksh -- build option string the first time called. */
|
|---|
| 288 | if (optstring[0] == 0)
|
|---|
| 289 | {
|
|---|
| 290 | s = optstring;
|
|---|
| 291 | *s++ = 'a'; *s++ = 'S'; *s++ = 'H';
|
|---|
| 292 | for (c = 0; limits[c].option > 0; c++)
|
|---|
| 293 | {
|
|---|
| 294 | *s++ = limits[c].option;
|
|---|
| 295 | *s++ = ';';
|
|---|
| 296 | }
|
|---|
| 297 | *s = '\0';
|
|---|
| 298 | }
|
|---|
| 299 |
|
|---|
| 300 | /* Initialize the command list. */
|
|---|
| 301 | if (cmdlistsz == 0)
|
|---|
| 302 | cmdlist = (ULCMD *)xmalloc ((cmdlistsz = 16) * sizeof (ULCMD));
|
|---|
| 303 | ncmd = 0;
|
|---|
| 304 |
|
|---|
| 305 | reset_internal_getopt ();
|
|---|
| 306 | while ((opt = internal_getopt (list, optstring)) != -1)
|
|---|
| 307 | {
|
|---|
| 308 | switch (opt)
|
|---|
| 309 | {
|
|---|
| 310 | case 'a':
|
|---|
| 311 | all_limits++;
|
|---|
| 312 | break;
|
|---|
| 313 |
|
|---|
| 314 | /* -S and -H are modifiers, not real options. */
|
|---|
| 315 | case 'S':
|
|---|
| 316 | mode |= LIMIT_SOFT;
|
|---|
| 317 | break;
|
|---|
| 318 |
|
|---|
| 319 | case 'H':
|
|---|
| 320 | mode |= LIMIT_HARD;
|
|---|
| 321 | break;
|
|---|
| 322 |
|
|---|
| 323 | case '?':
|
|---|
| 324 | builtin_usage ();
|
|---|
| 325 | return (EX_USAGE);
|
|---|
| 326 |
|
|---|
| 327 | default:
|
|---|
| 328 | if (ncmd >= cmdlistsz)
|
|---|
| 329 | cmdlist = (ULCMD *)xrealloc (cmdlist, (cmdlistsz *= 2) * sizeof (ULCMD));
|
|---|
| 330 | cmdlist[ncmd].cmd = opt;
|
|---|
| 331 | cmdlist[ncmd++].arg = list_optarg;
|
|---|
| 332 | break;
|
|---|
| 333 | }
|
|---|
| 334 | }
|
|---|
| 335 | list = loptend;
|
|---|
| 336 |
|
|---|
| 337 | if (all_limits)
|
|---|
| 338 | {
|
|---|
| 339 | #ifdef NOTYET
|
|---|
| 340 | if (list) /* setting */
|
|---|
| 341 | {
|
|---|
| 342 | if (STREQ (list->word->word, "unlimited") == 0)
|
|---|
| 343 | {
|
|---|
| 344 | builtin_error (_("%s: invalid limit argument"), list->word->word);
|
|---|
| 345 | return (EXECUTION_FAILURE);
|
|---|
| 346 | }
|
|---|
| 347 | return (set_all_limits (mode == 0 ? LIMIT_SOFT|LIMIT_HARD : mode, RLIM_INFINITY));
|
|---|
| 348 | }
|
|---|
| 349 | #endif
|
|---|
| 350 | print_all_limits (mode == 0 ? LIMIT_SOFT : mode);
|
|---|
| 351 | return (EXECUTION_SUCCESS);
|
|---|
| 352 | }
|
|---|
| 353 |
|
|---|
| 354 | /* default is `ulimit -f' */
|
|---|
| 355 | if (ncmd == 0)
|
|---|
| 356 | {
|
|---|
| 357 | cmdlist[ncmd].cmd = 'f';
|
|---|
| 358 | /* `ulimit something' is same as `ulimit -f something' */
|
|---|
| 359 | cmdlist[ncmd++].arg = list ? list->word->word : (char *)NULL;
|
|---|
| 360 | if (list)
|
|---|
| 361 | list = list->next;
|
|---|
| 362 | }
|
|---|
| 363 |
|
|---|
| 364 | /* verify each command in the list. */
|
|---|
| 365 | for (c = 0; c < ncmd; c++)
|
|---|
| 366 | {
|
|---|
| 367 | limind = _findlim (cmdlist[c].cmd);
|
|---|
| 368 | if (limind == -1)
|
|---|
| 369 | {
|
|---|
| 370 | builtin_error (_("`%c': bad command"), cmdlist[c].cmd);
|
|---|
| 371 | return (EX_USAGE);
|
|---|
| 372 | }
|
|---|
| 373 | }
|
|---|
| 374 |
|
|---|
| 375 | for (c = 0; c < ncmd; c++)
|
|---|
| 376 | if (ulimit_internal (cmdlist[c].cmd, cmdlist[c].arg, mode, ncmd > 1) == EXECUTION_FAILURE)
|
|---|
| 377 | return (EXECUTION_FAILURE);
|
|---|
| 378 |
|
|---|
| 379 | return (EXECUTION_SUCCESS);
|
|---|
| 380 | }
|
|---|
| 381 |
|
|---|
| 382 | static int
|
|---|
| 383 | ulimit_internal (cmd, cmdarg, mode, multiple)
|
|---|
| 384 | int cmd;
|
|---|
| 385 | char *cmdarg;
|
|---|
| 386 | int mode, multiple;
|
|---|
| 387 | {
|
|---|
| 388 | int opt, limind, setting;
|
|---|
| 389 | int block_factor;
|
|---|
| 390 | RLIMTYPE soft_limit, hard_limit, real_limit, limit;
|
|---|
| 391 |
|
|---|
| 392 | setting = cmdarg != 0;
|
|---|
| 393 | limind = _findlim (cmd);
|
|---|
| 394 | if (mode == 0)
|
|---|
| 395 | mode = setting ? (LIMIT_HARD|LIMIT_SOFT) : LIMIT_SOFT;
|
|---|
| 396 | opt = get_limit (limind, &soft_limit, &hard_limit);
|
|---|
| 397 | if (opt < 0)
|
|---|
| 398 | {
|
|---|
| 399 | builtin_error (_("%s: cannot get limit: %s"), limits[limind].description,
|
|---|
| 400 | strerror (errno));
|
|---|
| 401 | return (EXECUTION_FAILURE);
|
|---|
| 402 | }
|
|---|
| 403 |
|
|---|
| 404 | if (setting == 0) /* print the value of the specified limit */
|
|---|
| 405 | {
|
|---|
| 406 | printone (limind, (mode & LIMIT_SOFT) ? soft_limit : hard_limit, multiple);
|
|---|
| 407 | return (EXECUTION_SUCCESS);
|
|---|
| 408 | }
|
|---|
| 409 |
|
|---|
| 410 | /* Setting the limit. */
|
|---|
| 411 | if (STREQ (cmdarg, "hard"))
|
|---|
| 412 | real_limit = hard_limit;
|
|---|
| 413 | else if (STREQ (cmdarg, "soft"))
|
|---|
| 414 | real_limit = soft_limit;
|
|---|
| 415 | else if (STREQ (cmdarg, "unlimited"))
|
|---|
| 416 | real_limit = RLIM_INFINITY;
|
|---|
| 417 | else if (all_digits (cmdarg))
|
|---|
| 418 | {
|
|---|
| 419 | limit = string_to_rlimtype (cmdarg);
|
|---|
| 420 | block_factor = limits[limind].block_factor;
|
|---|
| 421 | real_limit = limit * block_factor;
|
|---|
| 422 |
|
|---|
| 423 | if ((real_limit / block_factor) != limit)
|
|---|
| 424 | {
|
|---|
| 425 | sh_erange (cmdarg, "limit");
|
|---|
| 426 | return (EXECUTION_FAILURE);
|
|---|
| 427 | }
|
|---|
| 428 | }
|
|---|
| 429 | else
|
|---|
| 430 | {
|
|---|
| 431 | sh_invalidnum (cmdarg);
|
|---|
| 432 | return (EXECUTION_FAILURE);
|
|---|
| 433 | }
|
|---|
| 434 |
|
|---|
| 435 | if (set_limit (limind, real_limit, mode) < 0)
|
|---|
| 436 | {
|
|---|
| 437 | builtin_error (_("%s: cannot modify limit: %s"), limits[limind].description,
|
|---|
| 438 | strerror (errno));
|
|---|
| 439 | return (EXECUTION_FAILURE);
|
|---|
| 440 | }
|
|---|
| 441 |
|
|---|
| 442 | return (EXECUTION_SUCCESS);
|
|---|
| 443 | }
|
|---|
| 444 |
|
|---|
| 445 | static int
|
|---|
| 446 | get_limit (ind, softlim, hardlim)
|
|---|
| 447 | int ind;
|
|---|
| 448 | RLIMTYPE *softlim, *hardlim;
|
|---|
| 449 | {
|
|---|
| 450 | RLIMTYPE value;
|
|---|
| 451 | #if defined (HAVE_RESOURCE)
|
|---|
| 452 | struct rlimit limit;
|
|---|
| 453 | #endif
|
|---|
| 454 |
|
|---|
| 455 | if (limits[ind].parameter >= 256)
|
|---|
| 456 | {
|
|---|
| 457 | switch (limits[ind].parameter)
|
|---|
| 458 | {
|
|---|
| 459 | case RLIMIT_FILESIZE:
|
|---|
| 460 | if (filesize (&value) < 0)
|
|---|
| 461 | return -1;
|
|---|
| 462 | break;
|
|---|
| 463 | case RLIMIT_PIPESIZE:
|
|---|
| 464 | if (pipesize (&value) < 0)
|
|---|
| 465 | return -1;
|
|---|
| 466 | break;
|
|---|
| 467 | case RLIMIT_OPENFILES:
|
|---|
| 468 | value = (RLIMTYPE)getdtablesize ();
|
|---|
| 469 | break;
|
|---|
| 470 | case RLIMIT_VIRTMEM:
|
|---|
| 471 | return (getmaxvm (softlim, hardlim));
|
|---|
| 472 | case RLIMIT_MAXUPROC:
|
|---|
| 473 | if (getmaxuprc (&value) < 0)
|
|---|
| 474 | return -1;
|
|---|
| 475 | break;
|
|---|
| 476 | default:
|
|---|
| 477 | errno = EINVAL;
|
|---|
| 478 | return -1;
|
|---|
| 479 | }
|
|---|
| 480 | *softlim = *hardlim = value;
|
|---|
| 481 | return (0);
|
|---|
| 482 | }
|
|---|
| 483 | else
|
|---|
| 484 | {
|
|---|
| 485 | #if defined (HAVE_RESOURCE)
|
|---|
| 486 | if (getrlimit (limits[ind].parameter, &limit) < 0)
|
|---|
| 487 | return -1;
|
|---|
| 488 | *softlim = limit.rlim_cur;
|
|---|
| 489 | *hardlim = limit.rlim_max;
|
|---|
| 490 | # if defined (HPUX9)
|
|---|
| 491 | if (limits[ind].parameter == RLIMIT_FILESIZE)
|
|---|
| 492 | {
|
|---|
| 493 | *softlim *= 512;
|
|---|
| 494 | *hardlim *= 512; /* Ugh. */
|
|---|
| 495 | }
|
|---|
| 496 | else
|
|---|
| 497 | # endif /* HPUX9 */
|
|---|
| 498 | return 0;
|
|---|
| 499 | #else
|
|---|
| 500 | errno = EINVAL;
|
|---|
| 501 | return -1;
|
|---|
| 502 | #endif
|
|---|
| 503 | }
|
|---|
| 504 | }
|
|---|
| 505 |
|
|---|
| 506 | static int
|
|---|
| 507 | set_limit (ind, newlim, mode)
|
|---|
| 508 | int ind;
|
|---|
| 509 | RLIMTYPE newlim;
|
|---|
| 510 | int mode;
|
|---|
| 511 | {
|
|---|
| 512 | #if defined (HAVE_RESOURCE)
|
|---|
| 513 | struct rlimit limit;
|
|---|
| 514 | RLIMTYPE val;
|
|---|
| 515 | #endif
|
|---|
|
|---|
