639 lines
18 KiB
C
639 lines
18 KiB
C
/*-
|
|
* Copyright (c) 1997 by
|
|
* David L. Nugent <davidn@blaze.net.au>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, is permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice immediately at the beginning of the file, without modification,
|
|
* this list of conditions, and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. This work was done expressly for inclusion into FreeBSD. Other use
|
|
* is permitted provided this notation is included.
|
|
* 4. Absolutely no warranty of function or purpose is made by the authors.
|
|
* 5. Modifications may be freely made to this file providing the above
|
|
* conditions are met.
|
|
*
|
|
* Display/change(+runprogram)/eval resource limits.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <err.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/param.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <stdarg.h>
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <pwd.h>
|
|
#include <login_cap.h>
|
|
#include <sys/time.h>
|
|
#include <sys/resource.h>
|
|
|
|
enum
|
|
{
|
|
SH_NONE,
|
|
SH_SH, /* sh */
|
|
SH_CSH, /* csh */
|
|
SH_BASH, /* gnu bash */
|
|
SH_TCSH, /* tcsh */
|
|
SH_KSH, /* (pd)ksh */
|
|
SH_ZSH, /* zsh */
|
|
SH_RC, /* rc or es */
|
|
SH_NUMBER
|
|
};
|
|
|
|
|
|
/* eval emitter for popular shells.
|
|
* Why aren't there any standards here? Most shells support either
|
|
* the csh 'limit' or sh 'ulimit' command, but each varies just
|
|
* enough that they aren't very compatible from one to the other.
|
|
*/
|
|
static struct {
|
|
const char * name; /* Name of shell */
|
|
const char * inf; /* Name used for 'unlimited' resource */
|
|
const char * cmd; /* Intro text */
|
|
const char * hard; /* Hard limit text */
|
|
const char * soft; /* Soft limit text */
|
|
const char * both; /* Hard+Soft limit text */
|
|
struct {
|
|
const char * pfx;
|
|
const char * sfx;
|
|
int divisor;
|
|
} lprm[RLIM_NLIMITS];
|
|
} shellparm[] =
|
|
{
|
|
{ "", "infinity", "Resource limits%s%s:\n", "-max", "-cur", "",
|
|
{
|
|
{ " cputime%-4s %8s", " secs\n", 1 },
|
|
{ " filesize%-4s %8s", " kb\n", 1024 },
|
|
{ " datasize%-4s %8s", " kb\n", 1024 },
|
|
{ " stacksize%-4s %8s", " kb\n", 1024 },
|
|
{ " coredumpsize%-4s %8s", " kb\n", 1024 },
|
|
{ " memoryuse%-4s %8s", " kb\n", 1024 },
|
|
{ " memorylocked%-4s %8s", " kb\n", 1024 },
|
|
{ " maxprocesses%-4s %8s", "\n", 1 },
|
|
{ " openfiles%-4s %8s", "\n", 1 },
|
|
{ " sbsize%-4s %8s", " bytes\n", 1 }
|
|
}
|
|
},
|
|
{ "sh", "unlimited", "", " -H", " -S", "",
|
|
{
|
|
{ "ulimit%s -t %s", ";\n", 1 },
|
|
{ "ulimit%s -f %s", ";\n", 512 },
|
|
{ "ulimit%s -d %s", ";\n", 1024 },
|
|
{ "ulimit%s -s %s", ";\n", 1024 },
|
|
{ "ulimit%s -c %s", ";\n", 512 },
|
|
{ "ulimit%s -m %s", ";\n", 1024 },
|
|
{ "ulimit%s -l %s", ";\n", 1024 },
|
|
{ "ulimit%s -u %s", ";\n", 1 },
|
|
{ "ulimit%s -n %s", ";\n", 1 },
|
|
{ "ulimit%s -b %s", ";\n", 1 }
|
|
}
|
|
},
|
|
{ "csh", "unlimited", "", " -h", "", NULL,
|
|
{
|
|
{ "limit%s cputime %s", ";\n", 1 },
|
|
{ "limit%s filesize %s", ";\n", 1024 },
|
|
{ "limit%s datasize %s", ";\n", 1024 },
|
|
{ "limit%s stacksize %s", ";\n", 1024 },
|
|
{ "limit%s coredumpsize %s", ";\n", 1024 },
|
|
{ "limit%s memoryuse %s", ";\n", 1024 },
|
|
{ "limit%s memorylocked %s", ";\n", 1024 },
|
|
{ "limit%s maxproc %s", ";\n", 1 },
|
|
{ "limit%s openfiles %s", ";\n", 1 },
|
|
{ "limit%s sbsize %s", ";\n", 1 }
|
|
}
|
|
},
|
|
{ "bash|bash2", "unlimited", "", " -H", " -S", "",
|
|
{
|
|
{ "ulimit%s -t %s", ";\n", 1 },
|
|
{ "ulimit%s -f %s", ";\n", 1024 },
|
|
{ "ulimit%s -d %s", ";\n", 1024 },
|
|
{ "ulimit%s -s %s", ";\n", 1024 },
|
|
{ "ulimit%s -c %s", ";\n", 1024 },
|
|
{ "ulimit%s -m %s", ";\n", 1024 },
|
|
{ "ulimit%s -l %s", ";\n", 1024 },
|
|
{ "ulimit%s -u %s", ";\n", 1 },
|
|
{ "ulimit%s -n %s", ";\n", 1 },
|
|
{ "ulimit%s -b %s", ";\n", 1 }
|
|
}
|
|
},
|
|
{ "tcsh", "unlimited", "", " -h", "", NULL,
|
|
{
|
|
{ "limit%s cputime %s", ";\n", 1 },
|
|
{ "limit%s filesize %s", ";\n", 1024 },
|
|
{ "limit%s datasize %s", ";\n", 1024 },
|
|
{ "limit%s stacksize %s", ";\n", 1024 },
|
|
{ "limit%s coredumpsize %s", ";\n", 1024 },
|
|
{ "limit%s memoryuse %s", ";\n", 1024 },
|
|
{ "limit%s memorylocked %s", ";\n", 1024 },
|
|
{ "limit%s maxproc %s", ";\n", 1 },
|
|
{ "limit%s descriptors %s", ";\n", 1 },
|
|
{ "limit%s sbsize %s", ";\n", 1 }
|
|
}
|
|
},
|
|
{ "ksh|pdksh", "unlimited", "", " -H", " -S", "",
|
|
{
|
|
{ "ulimit%s -t %s", ";\n", 1 },
|
|
{ "ulimit%s -f %s", ";\n", 512 },
|
|
{ "ulimit%s -d %s", ";\n", 1024 },
|
|
{ "ulimit%s -s %s", ";\n", 1024 },
|
|
{ "ulimit%s -c %s", ";\n", 512 },
|
|
{ "ulimit%s -m %s", ";\n", 1024 },
|
|
{ "ulimit%s -l %s", ";\n", 1024 },
|
|
{ "ulimit%s -p %s", ";\n", 1 },
|
|
{ "ulimit%s -n %s", ";\n", 1 },
|
|
{ "ulimit%s -b %s", ";\n", 1 }
|
|
}
|
|
},
|
|
{ "zsh", "unlimited", "", " -H", " -S", "",
|
|
{
|
|
{ "ulimit%s -t %s", ";\n", 1 },
|
|
{ "ulimit%s -f %s", ";\n", 512 },
|
|
{ "ulimit%s -d %s", ";\n", 1024 },
|
|
{ "ulimit%s -s %s", ";\n", 1024 },
|
|
{ "ulimit%s -c %s", ";\n", 512 },
|
|
{ "ulimit%s -m %s", ";\n", 1024 },
|
|
{ "ulimit%s -l %s", ";\n", 1024 },
|
|
{ "ulimit%s -u %s", ";\n", 1 },
|
|
{ "ulimit%s -n %s", ";\n", 1 },
|
|
{ "ulimit%s -b %s", ";\n", 1 }
|
|
}
|
|
},
|
|
{ "rc|es", "unlimited", "", " -h", "", NULL,
|
|
{
|
|
{ "limit%s cputime %s", ";\n", 1 },
|
|
{ "limit%s filesize %s", ";\n", 1024 },
|
|
{ "limit%s datasize %s", ";\n", 1024 },
|
|
{ "limit%s stacksize %s", ";\n", 1024 },
|
|
{ "limit%s coredumpsize %s", ";\n", 1024 },
|
|
{ "limit%s memoryuse %s", ";\n", 1024 },
|
|
{ "limit%s lockedmemory %s", ";\n", 1024 },
|
|
{ "limit%s processes %s", ";\n", 1 },
|
|
{ "limit%s descriptors %s", ";\n", 1 },
|
|
{ "limit%s sbsize %s", ";\n", 1 }
|
|
}
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
static struct {
|
|
const char * cap;
|
|
rlim_t (*func)(login_cap_t *, const char *, rlim_t, rlim_t);
|
|
} resources[RLIM_NLIMITS] = {
|
|
{ "cputime", login_getcaptime },
|
|
{ "filesize", login_getcapsize },
|
|
{ "datasize", login_getcapsize },
|
|
{ "stacksize", login_getcapsize },
|
|
{ "coredumpsize", login_getcapsize },
|
|
{ "memoryuse", login_getcapsize },
|
|
{ "memorylocked", login_getcapsize },
|
|
{ "maxproc", login_getcapnum },
|
|
{ "openfiles", login_getcapnum },
|
|
{ "sbsize", login_getcapsize }
|
|
};
|
|
|
|
/*
|
|
* One letter for each resource levels.
|
|
* NOTE: There is a dependancy on the corresponding
|
|
* letter index being equal to the resource number.
|
|
* If sys/resource.h defines are changed, this needs
|
|
* to be modified accordingly!
|
|
*/
|
|
|
|
#define RCS_STRING "tfdscmlunb"
|
|
|
|
static rlim_t resource_num(int which, int ch, const char *str);
|
|
static void usage(void);
|
|
static int getshelltype(void);
|
|
static void print_limit(rlim_t limit, unsigned divisor, const char *inf,
|
|
const char *pfx, const char *sfx, const char *which);
|
|
extern char **environ;
|
|
|
|
static const char rcs_string[] = RCS_STRING;
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
char *p, *cls = NULL;
|
|
char *cleanenv[1];
|
|
struct passwd * pwd = NULL;
|
|
int rcswhich, shelltype;
|
|
int i, num_limits = 0;
|
|
int ch, doeval = 0, doall = 0;
|
|
login_cap_t * lc = NULL;
|
|
enum { ANY=0, SOFT=1, HARD=2, BOTH=3, DISPLAYONLY=4 } type = ANY;
|
|
enum { RCSUNKNOWN=0, RCSSET=1, RCSSEL=2 } todo = RCSUNKNOWN;
|
|
int which_limits[RLIM_NLIMITS];
|
|
rlim_t set_limits[RLIM_NLIMITS];
|
|
struct rlimit limits[RLIM_NLIMITS];
|
|
|
|
/* init resource tables */
|
|
for (i = 0; i < RLIM_NLIMITS; i++) {
|
|
which_limits[i] = 0; /* Don't set/display any */
|
|
set_limits[i] = RLIM_INFINITY;
|
|
/* Get current resource values */
|
|
getrlimit(i, &limits[i]);
|
|
}
|
|
|
|
optarg = NULL;
|
|
while ((ch = getopt(argc, argv, ":EeC:U:BSHabc:d:f:l:m:n:s:t:u:")) != -1) {
|
|
switch(ch) {
|
|
case 'a':
|
|
doall = 1;
|
|
break;
|
|
case 'E':
|
|
environ = cleanenv;
|
|
cleanenv[0] = NULL;
|
|
break;
|
|
case 'e':
|
|
doeval = 1;
|
|
break;
|
|
case 'C':
|
|
cls = optarg;
|
|
break;
|
|
case 'U':
|
|
if ((pwd = getpwnam(optarg)) == NULL) {
|
|
if (!isdigit(*optarg) ||
|
|
(pwd = getpwuid(atoi(optarg))) == NULL) {
|
|
warnx("invalid user `%s'", optarg);
|
|
usage();
|
|
}
|
|
}
|
|
break;
|
|
case 'H':
|
|
type = HARD;
|
|
break;
|
|
case 'S':
|
|
type = SOFT;
|
|
break;
|
|
case 'B':
|
|
type = SOFT|HARD;
|
|
break;
|
|
default:
|
|
case ':': /* Without arg */
|
|
if ((p = strchr(rcs_string, optopt)) != NULL) {
|
|
int rcswhich = p - rcs_string;
|
|
if (optarg && *optarg == '-') { /* 'arg' is actually a switch */
|
|
--optind; /* back one arg, and make arg NULL */
|
|
optarg = NULL;
|
|
}
|
|
todo = optarg == NULL ? RCSSEL : RCSSET;
|
|
if (type == ANY)
|
|
type = BOTH;
|
|
which_limits[rcswhich] = optarg ? type : DISPLAYONLY;
|
|
set_limits[rcswhich] = resource_num(rcswhich, optopt, optarg);
|
|
num_limits++;
|
|
break;
|
|
}
|
|
/* FALLTHRU */
|
|
case '?':
|
|
usage();
|
|
}
|
|
optarg = NULL;
|
|
}
|
|
|
|
/* If user was specified, get class from that */
|
|
if (pwd != NULL)
|
|
lc = login_getpwclass(pwd);
|
|
else if (cls != NULL && *cls != '\0') {
|
|
lc = login_getclassbyname(cls, NULL);
|
|
if (lc == NULL || strcmp(cls, lc->lc_class) != 0)
|
|
fprintf(stderr, "login class '%s' non-existent, using %s\n",
|
|
cls, lc?lc->lc_class:"current settings");
|
|
}
|
|
|
|
/* If we have a login class, update resource table from that */
|
|
if (lc != NULL) {
|
|
for (rcswhich = 0; rcswhich < RLIM_NLIMITS; rcswhich++) {
|
|
char str[40];
|
|
rlim_t val;
|
|
|
|
/* current value overridden by resourcename or resourcename-cur */
|
|
sprintf(str, "%s-cur", resources[rcswhich].cap);
|
|
val = resources[rcswhich].func(lc, resources[rcswhich].cap, limits[rcswhich].rlim_cur, limits[rcswhich].rlim_cur);
|
|
limits[rcswhich].rlim_cur = resources[rcswhich].func(lc, str, val, val);
|
|
/* maximum value overridden by resourcename or resourcename-max */
|
|
sprintf(str, "%s-max", resources[rcswhich].cap);
|
|
val = resources[rcswhich].func(lc, resources[rcswhich].cap, limits[rcswhich].rlim_max, limits[rcswhich].rlim_max);
|
|
limits[rcswhich].rlim_max = resources[rcswhich].func(lc, str, val, val);
|
|
}
|
|
}
|
|
|
|
/* now, let's determine what we wish to do with all this */
|
|
|
|
argv += optind;
|
|
|
|
/* If we're setting limits or doing an eval (ie. we're not just
|
|
* displaying), then check that hard limits are not lower than
|
|
* soft limits, and force rasing the hard limit if we need to if
|
|
* we are raising the soft limit, or lower the soft limit if we
|
|
* are lowering the hard limit.
|
|
*/
|
|
if ((*argv || doeval) && getuid() == 0) {
|
|
|
|
for (rcswhich = 0; rcswhich < RLIM_NLIMITS; rcswhich++) {
|
|
if (limits[rcswhich].rlim_max != RLIM_INFINITY) {
|
|
if (limits[rcswhich].rlim_cur == RLIM_INFINITY) {
|
|
limits[rcswhich].rlim_max = RLIM_INFINITY;
|
|
which_limits[rcswhich] |= HARD;
|
|
} else if (limits[rcswhich].rlim_cur > limits[rcswhich].rlim_max) {
|
|
if (which_limits[rcswhich] == SOFT) {
|
|
limits[rcswhich].rlim_max = limits[rcswhich].rlim_cur;
|
|
which_limits[rcswhich] |= HARD;
|
|
} else if (which_limits[rcswhich] == HARD) {
|
|
limits[rcswhich].rlim_cur = limits[rcswhich].rlim_max;
|
|
which_limits[rcswhich] |= SOFT;
|
|
} else {
|
|
/* else.. if we're specifically setting both to
|
|
* silly values, then let it error out.
|
|
*/
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* See if we've overridden anything specific on the command line */
|
|
if (num_limits && todo == RCSSET) {
|
|
for (rcswhich = 0; rcswhich < RLIM_NLIMITS; rcswhich++) {
|
|
if (which_limits[rcswhich] & HARD)
|
|
limits[rcswhich].rlim_max = set_limits[rcswhich];
|
|
if (which_limits[rcswhich] & SOFT)
|
|
limits[rcswhich].rlim_cur = set_limits[rcswhich];
|
|
}
|
|
}
|
|
|
|
/* If *argv is not NULL, then we are being asked to
|
|
* (perhaps) set environment variables and run a program
|
|
*/
|
|
if (*argv) {
|
|
if (doeval) {
|
|
warnx("-e cannot be used with `cmd' option");
|
|
usage();
|
|
}
|
|
|
|
login_close(lc);
|
|
|
|
/* set leading environment variables, like eval(1) */
|
|
while (*argv && (p = strchr(*argv, '=')))
|
|
(void)setenv(*argv++, ++p, 1);
|
|
|
|
/* Set limits */
|
|
for (rcswhich = 0; rcswhich < RLIM_NLIMITS; rcswhich++) {
|
|
if (doall || num_limits == 0 || which_limits[rcswhich] != 0)
|
|
if (setrlimit(rcswhich, &limits[rcswhich]) == -1)
|
|
err(1, "setrlimit %s", resources[rcswhich].cap);
|
|
}
|
|
|
|
if (*argv == NULL)
|
|
usage();
|
|
|
|
execvp(*argv, argv);
|
|
err(1, "%s", *argv);
|
|
}
|
|
|
|
shelltype = doeval ? getshelltype() : SH_NONE;
|
|
|
|
if (type == ANY) /* Default to soft limits */
|
|
type = SOFT;
|
|
|
|
/* Display limits */
|
|
printf(shellparm[shelltype].cmd,
|
|
lc ? " for class " : " (current)",
|
|
lc ? lc->lc_class : "");
|
|
|
|
for (rcswhich = 0; rcswhich < RLIM_NLIMITS; rcswhich++) {
|
|
if (doall || num_limits == 0 || which_limits[rcswhich] != 0) {
|
|
if (which_limits[rcswhich] == ANY || which_limits[rcswhich])
|
|
which_limits[rcswhich] = type;
|
|
if (shellparm[shelltype].lprm[rcswhich].pfx) {
|
|
if (shellparm[shelltype].both && limits[rcswhich].rlim_cur == limits[rcswhich].rlim_max) {
|
|
print_limit(limits[rcswhich].rlim_max,
|
|
shellparm[shelltype].lprm[rcswhich].divisor,
|
|
shellparm[shelltype].inf,
|
|
shellparm[shelltype].lprm[rcswhich].pfx,
|
|
shellparm[shelltype].lprm[rcswhich].sfx,
|
|
shellparm[shelltype].both);
|
|
} else {
|
|
if (which_limits[rcswhich] & HARD) {
|
|
print_limit(limits[rcswhich].rlim_max,
|
|
shellparm[shelltype].lprm[rcswhich].divisor,
|
|
shellparm[shelltype].inf,
|
|
shellparm[shelltype].lprm[rcswhich].pfx,
|
|
shellparm[shelltype].lprm[rcswhich].sfx,
|
|
shellparm[shelltype].hard);
|
|
}
|
|
if (which_limits[rcswhich] & SOFT) {
|
|
print_limit(limits[rcswhich].rlim_cur,
|
|
shellparm[shelltype].lprm[rcswhich].divisor,
|
|
shellparm[shelltype].inf,
|
|
shellparm[shelltype].lprm[rcswhich].pfx,
|
|
shellparm[shelltype].lprm[rcswhich].sfx,
|
|
shellparm[shelltype].soft);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
login_close(lc);
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
(void)fprintf(stderr,
|
|
"usage: limits [-C class|-U user] [-eaSHBE] [-bcdflmnstu [val]] [[name=val ...] cmd]\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
static void
|
|
print_limit(rlim_t limit, unsigned divisor, const char * inf, const char * pfx, const char * sfx, const char * which)
|
|
{
|
|
char numbr[64];
|
|
|
|
if (limit == RLIM_INFINITY)
|
|
strcpy(numbr, inf);
|
|
else
|
|
sprintf(numbr, "%qd", (quad_t)((limit + divisor/2) / divisor));
|
|
printf(pfx, which, numbr);
|
|
printf(sfx, which);
|
|
|
|
}
|
|
|
|
|
|
static rlim_t
|
|
resource_num(int which, int ch, const char *str)
|
|
{
|
|
rlim_t res = RLIM_INFINITY;
|
|
|
|
if (str != NULL &&
|
|
!(strcasecmp(str, "inf") == 0 ||
|
|
strcasecmp(str, "infinity") == 0 ||
|
|
strcasecmp(str, "unlimit") == 0 ||
|
|
strcasecmp(str, "unlimited") == 0)) {
|
|
const char * s = str;
|
|
char *e;
|
|
|
|
switch (which) {
|
|
case RLIMIT_CPU: /* time values */
|
|
errno = 0;
|
|
res = 0;
|
|
while (*s) {
|
|
rlim_t tim = strtoq(s, &e, 0);
|
|
if (e == NULL || e == s || errno)
|
|
break;
|
|
switch (*e++) {
|
|
case 0: /* end of string */
|
|
e--;
|
|
default:
|
|
case 's': case 'S': /* seconds */
|
|
break;
|
|
case 'm': case 'M': /* minutes */
|
|
tim *= 60L;
|
|
break;
|
|
case 'h': case 'H': /* hours */
|
|
tim *= (60L * 60L);
|
|
break;
|
|
case 'd': case 'D': /* days */
|
|
tim *= (60L * 60L * 24L);
|
|
break;
|
|
case 'w': case 'W': /* weeks */
|
|
tim *= (60L * 60L * 24L * 7L);
|
|
case 'y': case 'Y': /* Years */
|
|
tim *= (60L * 60L * 24L * 365L);
|
|
}
|
|
s = e;
|
|
res += tim;
|
|
}
|
|
break;
|
|
case RLIMIT_FSIZE: /* Size values */
|
|
case RLIMIT_DATA:
|
|
case RLIMIT_STACK:
|
|
case RLIMIT_CORE:
|
|
case RLIMIT_RSS:
|
|
case RLIMIT_MEMLOCK:
|
|
errno = 0;
|
|
res = 0;
|
|
while (*s) {
|
|
rlim_t mult, tim = strtoq(s, &e, 0);
|
|
if (e == NULL || e == s || errno)
|
|
break;
|
|
switch (*e++) {
|
|
case 0: /* end of string */
|
|
e--;
|
|
default:
|
|
mult = 1;
|
|
break;
|
|
case 'b': case 'B': /* 512-byte blocks */
|
|
mult = 512;
|
|
break;
|
|
case 'k': case 'K': /* 1024-byte Kilobytes */
|
|
mult = 1024;
|
|
break;
|
|
case 'm': case 'M': /* 1024-k kbytes */
|
|
mult = 1024 * 1024;
|
|
break;
|
|
case 'g': case 'G': /* 1Gbyte */
|
|
mult = 1024 * 1024 * 1024;
|
|
break;
|
|
case 't': case 'T': /* 1TBte */
|
|
mult = 1024LL * 1024LL * 1024LL * 1024LL;
|
|
break;
|
|
}
|
|
s = e;
|
|
res += (tim * mult);
|
|
}
|
|
break;
|
|
case RLIMIT_NPROC:
|
|
case RLIMIT_NOFILE:
|
|
res = strtoq(s, &e, 0);
|
|
s = e;
|
|
break;
|
|
}
|
|
if (*s) {
|
|
warnx("invalid value -%c `%s'", ch, str);
|
|
usage();
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
static int
|
|
getshellbyname(const char * shell)
|
|
{
|
|
int i;
|
|
const char * q;
|
|
const char * p = strrchr(shell, '/');
|
|
|
|
p = p ? ++p : shell;
|
|
for (i = 0; (q = shellparm[i].name) != NULL; i++) {
|
|
while (*q) {
|
|
int j = strcspn(q, "|");
|
|
|
|
if (j == 0)
|
|
break;
|
|
if (strncmp(p, q, j) == 0)
|
|
return i;
|
|
if (*(q += j))
|
|
++q;
|
|
}
|
|
}
|
|
return SH_SH;
|
|
}
|
|
|
|
|
|
/*
|
|
* Determine the type of shell our parent process is
|
|
* This is quite tricky, not 100% reliable and probably
|
|
* not nearly as thorough as it should be. Basically, this
|
|
* is a "best guess" only, but hopefully will work in
|
|
* most cases.
|
|
*/
|
|
|
|
static int
|
|
getshelltype(void)
|
|
{
|
|
pid_t ppid = getppid();
|
|
|
|
if (ppid != 1) {
|
|
FILE * fp;
|
|
struct stat st;
|
|
char procdir[MAXPATHLEN], buf[128];
|
|
int l = sprintf(procdir, "/proc/%ld/", (long)ppid);
|
|
char * shell = getenv("SHELL");
|
|
|
|
if (shell != NULL && stat(shell, &st) != -1) {
|
|
struct stat st1;
|
|
|
|
strcpy(procdir+l, "file");
|
|
/* $SHELL is actual shell? */
|
|
if (stat(procdir, &st1) != -1 && memcmp(&st, &st1, sizeof st) == 0)
|
|
return getshellbyname(shell);
|
|
}
|
|
strcpy(procdir+l, "status");
|
|
if (stat(procdir, &st) == 0 && (fp = fopen(procdir, "r")) != NULL) {
|
|
char * p = fgets(buf, sizeof buf, fp)==NULL ? NULL : strtok(buf, " \t");
|
|
fclose(fp);
|
|
if (p != NULL)
|
|
return getshellbyname(p);
|
|
}
|
|
}
|
|
return SH_SH;
|
|
}
|
|
|