emo/procps
1
0
Fork 0
Code Issues Pull Requests Packages Releases Activity
46458ab6b7
procps/pgrep.c
Filipe Brandenburger a3975a9c60 pkill: reject -signal number with trailing garbage 
This commit prevents pkill from accepting something like `-1garbage` as
a SIGHUP. The previous code was using atoi() which does not check for
trailing garbage and would parse the above as 1.

Handling numeric signals in signal_option() is not really necessary,
since signal_name_to_number() will recognize numeric signals and parse
them properly using strtol() and checking for trailing garbage. It also
checks that the numeric signals are in the proper range. So all we need
to do is remove the buggy numeric signal handling here.

Tested with `pkill -1garbage sleep`, after this patch it will complain
that "1" is not a valid option, which is the expected.

Signed-off-by: Filipe Brandenburger <filbranden@google.com>

Ported-by: Jim Warner <james.warner@comcast.net>
From original:
commit 9646f7cba4
2015-10-14 21:24:38 +11:00

892 lines
27 KiB
C
Raw Blame History

/*
* pgrep/pkill -- utilities to filter the process table
*
* Copyright 2000 Kjetil Torgrim Homme <kjetilho@ifi.uio.no>
* Changes by Albert Cahalan, 2002,2006.
* Changes by Roberto Polli <rpolli@babel.it>, 2012.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <unistd.h>
#include <ctype.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
#include <pwd.h>
#include <grp.h>
#include <regex.h>
#include <errno.h>
#include <getopt.h>
/* EXIT_SUCCESS is 0 */
/* EXIT_FAILURE is 1 */
#define EXIT_USAGE 2
#define EXIT_FATAL 3
#define XALLOC_EXIT_CODE EXIT_FATAL
#define CMDSTRSIZE 4096
#include "c.h"
#include "fileutils.h"
#include "nls.h"
#include "signals.h"
#include "xalloc.h"
#include <proc/pids.h>
#include <proc/namespace.h>
#include <proc/devname.h>
enum pids_item Items[] = {
PROCPS_PIDS_ID_PID,
PROCPS_PIDS_ID_PPID,
PROCPS_PIDS_ID_PGRP,
PROCPS_PIDS_ID_EUID,
PROCPS_PIDS_ID_RUID,
PROCPS_PIDS_ID_RGID,
PROCPS_PIDS_ID_SESSION,
PROCPS_PIDS_ID_TGID,
PROCPS_PIDS_TIME_START,
PROCPS_PIDS_TTY_NAME,
PROCPS_PIDS_CMD,
PROCPS_PIDS_CMDLINE
};
enum rel_items {
EU_PID, EU_PPID, EU_PGRP, EU_EUID, EU_RUID, EU_RGID, EU_SESSION,
EU_TGID, EU_STARTTIME, EU_TTYNAME, EU_CMD, EU_CMDLINE
};
static int i_am_pkill = 0;
struct el {
long num;
char * str;
};
/* User supplied arguments */
static int opt_full = 0;
static int opt_long = 0;
static int opt_longlong = 0;
static int opt_oldest = 0;
static int opt_newest = 0;
static int opt_negate = 0;
static int opt_exact = 0;
static int opt_count = 0;
static int opt_signal = SIGTERM;
static int opt_lock = 0;
static int opt_case = 0;
static int opt_echo = 0;
static int opt_threads = 0;
static pid_t opt_ns_pid = 0;
static const char *opt_delim = "\n";
static struct el *opt_pgrp = NULL;
static struct el *opt_rgid = NULL;
static struct el *opt_pid = NULL;
static struct el *opt_ppid = NULL;
static struct el *opt_sid = NULL;
static struct el *opt_term = NULL;
static struct el *opt_euid = NULL;
static struct el *opt_ruid = NULL;
static struct el *opt_nslist = NULL;
static char *opt_pattern = NULL;
static char *opt_pidfile = NULL;
/* by default, all namespaces will be checked */
static int ns_flags = 0x3f;
static int __attribute__ ((__noreturn__)) usage(int opt)
{
int err = (opt == '?');
FILE *fp = err ? stderr : stdout;
fputs(USAGE_HEADER, fp);
fprintf(fp, _(" %s [options] <pattern>\n"), program_invocation_short_name);
fputs(USAGE_OPTIONS, fp);
if (i_am_pkill == 0) {
fputs(_(" -d, --delimiter <string> specify output delimiter\n"),fp);
fputs(_(" -l, --list-name list PID and process name\n"),fp);
fputs(_(" -a, --list-full list PID and full command line\n"),fp);
fputs(_(" -v, --inverse negates the matching\n"),fp);
fputs(_(" -w, --lightweight list all TID\n"), fp);
}
if (i_am_pkill == 1) {
fputs(_(" -<sig>, --signal <sig> signal to send (either number or name)\n"), fp);
fputs(_(" -e, --echo display what is killed\n"), fp);
}
fputs(_(" -c, --count count of matching processes\n"), fp);
fputs(_(" -f, --full use full process name to match\n"), fp);
fputs(_(" -g, --pgroup <PGID,...> match listed process group IDs\n"), fp);
fputs(_(" -G, --group <GID,...> match real group IDs\n"), fp);
fputs(_(" -i, --ignore-case match case insensitively\n"), fp);
fputs(_(" -n, --newest select most recently started\n"), fp);
fputs(_(" -o, --oldest select least recently started\n"), fp);
fputs(_(" -P, --parent <PPID,...> match only child processes of the given parent\n"), fp);
fputs(_(" -s, --session <SID,...> match session IDs\n"), fp);
fputs(_(" -t, --terminal <tty,...> match by controlling terminal\n"), fp);
fputs(_(" -u, --euid <ID,...> match by effective IDs\n"), fp);
fputs(_(" -U, --uid <ID,...> match by real IDs\n"), fp);
fputs(_(" -x, --exact match exactly with the command name\n"), fp);
fputs(_(" -F, --pidfile <file> read PIDs from file\n"), fp);
fputs(_(" -L, --logpidfile fail if PID file is not locked\n"), fp);
fputs(_(" --ns <PID> match the processes that belong to the same\n"
" namespace as <pid>\n"), fp);
fputs(_(" --nslist <ns,...> list which namespaces will be considered for\n"
" the --ns option.\n"
" Available namespaces: ipc, mnt, net, pid, user, uts\n"), fp);
fputs(USAGE_SEPARATOR, fp);
fputs(USAGE_HELP, fp);
fputs(USAGE_VERSION, fp);
fprintf(fp, USAGE_MAN_TAIL("pgrep(1)"));
exit(fp == stderr ? EXIT_USAGE : EXIT_SUCCESS);
}
static struct el *split_list (const char *restrict str, int (*convert)(const char *, struct el *))
{
char *copy;
char *ptr;
char *sep_pos;
int i = 0;
int size = 0;
struct el *list = NULL;
if (str[0] == '\0')
return NULL;
copy = xstrdup (str);
ptr = copy;
do {
if (i == size) {
size = size * 5 / 4 + 4;
/* add 1 because slot zero is a count */
list = xrealloc (list, (1 + size) * sizeof *list);
}
sep_pos = strchr (ptr, ',');
if (sep_pos)
*sep_pos = 0;
/* Use ++i instead of i++ because slot zero is a count */
if (list && !convert (ptr, &list[++i]))
exit (EXIT_USAGE);
if (sep_pos)
ptr = sep_pos + 1;
} while (sep_pos);
free (copy);
if (!i) {
free (list);
list = NULL;
} else {
list[0].num = i;
}
return list;
}
/* strict_atol returns a Boolean: TRUE if the input string
* contains a plain number, FALSE if there are any non-digits. */
static int strict_atol (const char *restrict str, long *restrict value)
{
int res = 0;
int sign = 1;
if (*str == '+')
++str;
else if (*str == '-') {
++str;
sign = -1;
}
for ( ; *str; ++str) {
if (! isdigit (*str))
return (0);
res *= 10;
res += *str - '0';
}
*value = sign * res;
return 1;
}
#include <sys/file.h>
/* We try a read lock. The daemon should have a write lock.
* Seen using flock: FreeBSD code */
static int has_flock(int fd)
{
return flock(fd, LOCK_SH|LOCK_NB)==-1 && errno==EWOULDBLOCK;
}
/* We try a read lock. The daemon should have a write lock.
* Seen using fcntl: libslack */
static int has_fcntl(int fd)
{
struct flock f; /* seriously, struct flock is for a fnctl lock! */
f.l_type = F_RDLCK;
f.l_whence = SEEK_SET;
f.l_start = 0;
f.l_len = 0;
return fcntl(fd,F_SETLK,&f)==-1 && (errno==EACCES || errno==EAGAIN);
}
static struct el *read_pidfile(void)
{
char buf[12];
int fd;
struct stat sbuf;
char *endp;
int n, pid;
struct el *list = NULL;
fd = open(opt_pidfile, O_RDONLY|O_NOCTTY|O_NONBLOCK);
if(fd<0)
goto just_ret;
if(fstat(fd,&sbuf) || !S_ISREG(sbuf.st_mode) || sbuf.st_size<1)
goto out;
/* type of lock, if any, is not standardized on Linux */
if(opt_lock && !has_flock(fd) && !has_fcntl(fd))
goto out;
memset(buf,'\0',sizeof buf);
n = read(fd,buf+1,sizeof buf-2);
if (n<1)
goto out;
pid = strtoul(buf+1,&endp,10);
if(endp<=buf+1 || pid<1 || pid>0x7fffffff)
goto out;
if(*endp && !isspace(*endp))
goto out;
list = xmalloc(2 * sizeof *list);
list[0].num = 1;
list[1].num = pid;
out:
close(fd);
just_ret:
return list;
}
static int conv_uid (const char *restrict name, struct el *restrict e)
{
struct passwd *pwd;
if (strict_atol (name, &e->num))
return (1);
pwd = getpwnam (name);
if (pwd == NULL) {
xwarnx(_("invalid user name: %s"), name);
return 0;
}
e->num = pwd->pw_uid;
return 1;
}
static int conv_gid (const char *restrict name, struct el *restrict e)
{
struct group *grp;
if (strict_atol (name, &e->num))
return 1;
grp = getgrnam (name);
if (grp == NULL) {
xwarnx(_("invalid group name: %s"), name);
return 0;
}
e->num = grp->gr_gid;
return 1;
}
static int conv_pgrp (const char *restrict name, struct el *restrict e)
{
if (! strict_atol (name, &e->num)) {
xwarnx(_("invalid process group: %s"), name);
return 0;
}
if (e->num == 0)
e->num = getpgrp ();
return 1;
}
static int conv_sid (const char *restrict name, struct el *restrict e)
{
if (! strict_atol (name, &e->num)) {
xwarnx(_("invalid session id: %s"), name);
return 0;
}
if (e->num == 0)
e->num = getsid (0);
return 1;
}
static int conv_num (const char *restrict name, struct el *restrict e)
{
if (! strict_atol (name, &e->num)) {
xwarnx(_("not a number: %s"), name);
return 0;
}
return 1;
}
static int conv_str (const char *restrict name, struct el *restrict e)
{
e->str = xstrdup (name);
return 1;
}
static int conv_ns (const char *restrict name, struct el *restrict e)
{
int rc = conv_str(name, e);
int id;
ns_flags = 0;
id = procps_ns_get_id(name);
if (id == -1)
return 0;
ns_flags |= (1 << id);
return rc;
}
static int match_numlist (long value, const struct el *restrict list)
{
int found = 0;
if (list == NULL)
found = 0;
else {
int i;
for (i = list[0].num; i > 0; i--) {
if (list[i].num == value)
found = 1;
}
}
return found;
}
static int match_strlist (const char *restrict value, const struct el *restrict list)
{
int found = 0;
if (list == NULL)
found = 0;
else {
int i;
for (i = list[0].num; i > 0; i--) {
if (! strcmp (list[i].str, value))
found = 1;
}
}
return found;
}
static int match_ns (const int pid,
const struct procps_namespaces *match_ns)
{
struct procps_namespaces proc_ns;
int found = 1;
int i;
if (procps_ns_read_pid(pid, &proc_ns) < 0)
xerrx(EXIT_FATAL,
_("Unable to read process namespace information"));
for (i = 0; i < PROCPS_NS_COUNT; i++) {
if (ns_flags & (1 << i)) {
if (proc_ns.ns[i] != match_ns->ns[i])
found = 0;
}
}
return found;
}
static void output_numlist (const struct el *restrict list, int num)
{
int i;
const char *delim = opt_delim;
for (i = 0; i < num; i++) {
if(i+1==num)
delim = "\n";
printf ("%ld%s", list[i].num, delim);
}
}
static void output_strlist (const struct el *restrict list, int num)
{
/* FIXME: escape codes */
int i;
const char *delim = opt_delim;
for (i = 0; i < num; i++) {
if(i+1==num)
delim = "\n";
printf ("%lu %s%s", list[i].num, list[i].str, delim);
}
}
static regex_t * do_regcomp (void)
{
regex_t *preg = NULL;
if (opt_pattern) {
char *re;
char errbuf[256];
int re_err;
preg = xmalloc (sizeof (regex_t));
if (opt_exact) {
re = xmalloc (strlen (opt_pattern) + 5);
sprintf (re, "^(%s)$", opt_pattern);
} else {
re = opt_pattern;
}
re_err = regcomp (preg, re, REG_EXTENDED | REG_NOSUB | opt_case);
if (opt_exact) free(re);
if (re_err) {
regerror (re_err, preg, errbuf, sizeof(errbuf));
fputs(errbuf,stderr);
exit (EXIT_USAGE);
}
}
return preg;
}
static struct el * select_procs (int *num)
{
#define PIDS_GETINT(e) PROCPS_PIDS_VAL(EU_ ## e, s_int, stack)
#define PIDS_GETULL(e) PROCPS_PIDS_VAL(EU_ ## e, ull_int, stack)
#define PIDS_GETSTR(e) PROCPS_PIDS_VAL(EU_ ## e, str, stack)
struct procps_pidsinfo *info=NULL;
struct procps_namespaces nsp;
struct pids_stack *stack;
unsigned long long saved_start_time; /* for new/old support */
int saved_pid = 0; /* for new/old support */
int matches = 0;
int size = 0;
regex_t *preg;
pid_t myself = getpid();
struct el *list = NULL;
char cmdsearch[CMDSTRSIZE];
char cmdoutput[CMDSTRSIZE];
char *task_cmdline;
enum pids_reap_type which;
preg = do_regcomp();
if (opt_newest) saved_start_time = 0ULL;
else saved_start_time = ~0ULL;
if (opt_newest) saved_pid = 0;
if (opt_oldest) saved_pid = INT_MAX;
if (opt_ns_pid && procps_ns_read_pid(opt_ns_pid, &nsp) < 0) {
xerrx(EXIT_FATAL,
_("Error reading reference namespace information\n"));
}
if (procps_pids_new(&info, 12, Items) < 0)
xerrx(EXIT_FATAL,
_("Unable to create pid info structure"));
if (opt_threads && !i_am_pkill)
which = PROCPS_REAP_THREADS_TOO;
else
which = PROCPS_REAP_TASKS_ONLY;
if (procps_pids_read_open(info, which) < 0)
xerrx(EXIT_FATAL,
_("Unable to open pids information"));
while ((stack = procps_pids_read_next(info))) {
int match = 1;
if (PIDS_GETINT(PID) == myself)
continue;
else if (opt_newest && PIDS_GETULL(STARTTIME) < saved_start_time)
match = 0;
else if (opt_oldest && PIDS_GETULL(STARTTIME) > saved_start_time)
match = 0;
else if (opt_ppid && ! match_numlist(PIDS_GETINT(PPID), opt_ppid))
match = 0;
else if (opt_pid && ! match_numlist (PIDS_GETINT(TGID), opt_pid))
match = 0;
else if (opt_pgrp && ! match_numlist (PIDS_GETINT(PGRP), opt_pgrp))
match = 0;
else if (opt_euid && ! match_numlist (PIDS_GETINT(EUID), opt_euid))
match = 0;
else if (opt_ruid && ! match_numlist (PIDS_GETINT(RUID), opt_ruid))
match = 0;
else if (opt_rgid && ! match_numlist (PIDS_GETINT(RGID), opt_rgid))
match = 0;
else if (opt_sid && ! match_numlist (PIDS_GETINT(SESSION), opt_sid))
match = 0;
else if (opt_ns_pid && ! match_ns (PIDS_GETINT(PID), &nsp))
match = 0;
else if (opt_term)
match = match_strlist(PIDS_GETSTR(TTYNAME), opt_term);
task_cmdline = PIDS_GETSTR(CMDLINE);
task_cmdline[CMDSTRSIZE -1] = '\0';
if (opt_long || opt_longlong || (match && opt_pattern)) {
if (opt_longlong)
strncpy (cmdoutput, task_cmdline, CMDSTRSIZE);
else
strncpy (cmdoutput, PIDS_GETSTR(CMD), CMDSTRSIZE);
}
if (match && opt_pattern) {
if (opt_full)
strncpy (cmdsearch, task_cmdline, CMDSTRSIZE);
else
strncpy (cmdsearch, PIDS_GETSTR(CMD), CMDSTRSIZE);
if (regexec (preg, cmdsearch, 0, NULL, 0) != 0)
match = 0;
}
if (match ^ opt_negate) { /* Exclusive OR is neat */
if (opt_newest) {
if (saved_start_time == PIDS_GETULL(STARTTIME) &&
saved_pid > PIDS_GETINT(PID))
continue;
saved_start_time = PIDS_GETULL(STARTTIME);
saved_pid = PIDS_GETINT(PID);
matches = 0;
}
if (opt_oldest) {
if (saved_start_time == PIDS_GETULL(STARTTIME) &&
saved_pid < PIDS_GETINT(PID))
continue;
saved_start_time = PIDS_GETULL(STARTTIME);
saved_pid = PIDS_GETINT(PID);
matches = 0;
}
if (matches == size) {
size = size * 5 / 4 + 4;
list = xrealloc(list, size * sizeof *list);
}
if (list && (opt_long || opt_longlong || opt_echo)) {
list[matches].num = PIDS_GETINT(PID);
list[matches++].str = xstrdup (cmdoutput);
} else if (list) {
list[matches++].num = PIDS_GETINT(PID);
} else {
xerrx(EXIT_FATAL, _("internal error"));
}
}
}
procps_pids_read_shut(info);
*num = matches;
return list;
#undef PIDS_GETINT
#undef PIDS_GETULL
#undef PIDS_GETSTR
}
static int signal_option(int *argc, char **argv)
{
int sig;
int i;
for (i = 1; i < *argc; i++) {
if (argv[i][0] == '-') {
sig = signal_name_to_number(argv[i] + 1);
if (-1 < sig) {
memmove(argv + i, argv + i + 1,
sizeof(char *) * (*argc - i));
(*argc)--;
return sig;
}
}
}
return -1;
}
static void parse_opts (int argc, char **argv)
{
char opts[64] = "";
int opt;
int criteria_count = 0;
enum {
SIGNAL_OPTION = CHAR_MAX + 1,
NS_OPTION,
NSLIST_OPTION,
};
static const struct option longopts[] = {
{"signal", required_argument, NULL, SIGNAL_OPTION},
{"count", no_argument, NULL, 'c'},
{"delimiter", required_argument, NULL, 'd'},
{"list-name", no_argument, NULL, 'l'},
{"list-full", no_argument, NULL, 'a'},
{"full", no_argument, NULL, 'f'},
{"pgroup", required_argument, NULL, 'g'},
{"group", required_argument, NULL, 'G'},
{"ignore-case", no_argument, NULL, 'i'},
{"newest", no_argument, NULL, 'n'},
{"oldest", no_argument, NULL, 'o'},
{"parent", required_argument, NULL, 'P'},
{"session", required_argument, NULL, 's'},
{"terminal", required_argument, NULL, 't'},
{"euid", required_argument, NULL, 'u'},
{"uid", required_argument, NULL, 'U'},
{"inverse", no_argument, NULL, 'v'},
{"lightweight", no_argument, NULL, 'w'},
{"exact", no_argument, NULL, 'x'},
{"pidfile", required_argument, NULL, 'F'},
{"logpidfile", no_argument, NULL, 'L'},
{"echo", no_argument, NULL, 'e'},
{"ns", required_argument, NULL, NS_OPTION},
{"nslist", required_argument, NULL, NSLIST_OPTION},
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'V'},
{NULL, 0, NULL, 0}
};
if (strstr (program_invocation_short_name, "pkill")) {
int sig;
i_am_pkill = 1;
sig = signal_option(&argc, argv);
if (-1 < sig)
opt_signal = sig;
/* These options are for pkill only */
strcat (opts, "e");
} else {
/* These options are for pgrep only */
strcat (opts, "lad:vw");
}
strcat (opts, "LF:cfinoxP:g:s:u:U:G:t:?Vh");
while ((opt = getopt_long (argc, argv, opts, longopts, NULL)) != -1) {
switch (opt) {
case SIGNAL_OPTION:
opt_signal = signal_name_to_number (optarg);
if (opt_signal == -1 && isdigit (optarg[0]))
opt_signal = atoi (optarg);
break;
case 'e':
opt_echo = 1;
break;
/* case 'D': / * FreeBSD: print info about non-matches for debugging * /
* break; */
case 'F': /* FreeBSD: the arg is a file containing a PID to match */
opt_pidfile = xstrdup (optarg);
++criteria_count;
break;
case 'G': /* Solaris: match rgid/rgroup */
opt_rgid = split_list (optarg, conv_gid);
if (opt_rgid == NULL)
usage ('?');
++criteria_count;
break;
/* case 'I': / * FreeBSD: require confirmation before killing * /
* break; */
/* case 'J': / * Solaris: match by project ID (name or number) * /
* break; */
case 'L': /* FreeBSD: fail if pidfile (see -F) not locked */
opt_lock++;
break;
/* case 'M': / * FreeBSD: specify core (OS crash dump) file * /
* break; */
/* case 'N': / * FreeBSD: specify alternate namelist file (for us, System.map -- but we don't need it) * /
* break; */
case 'P': /* Solaris: match by PPID */
opt_ppid = split_list (optarg, conv_num);
if (opt_ppid == NULL)
usage ('?');
++criteria_count;
break;
/* case 'S': / * FreeBSD: don't ignore the built-in kernel tasks * /
* break; */
/* case 'T': / * Solaris: match by "task ID" (probably not a Linux task) * /
* break; */
case 'U': /* Solaris: match by ruid/rgroup */
opt_ruid = split_list (optarg, conv_uid);
if (opt_ruid == NULL)
usage ('?');
++criteria_count;
break;
case 'V':
printf(PROCPS_NG_VERSION);
exit(EXIT_SUCCESS);
/* case 'c': / * Solaris: match by contract ID * /
* break; */
case 'c':
opt_count = 1;
break;
case 'd': /* Solaris: change the delimiter */
opt_delim = xstrdup (optarg);
break;
case 'f': /* Solaris: match full process name (as in "ps -f") */
opt_full = 1;
break;
case 'g': /* Solaris: match pgrp */
opt_pgrp = split_list (optarg, conv_pgrp);
if (opt_pgrp == NULL)
usage ('?');
++criteria_count;
break;
case 'i': /* FreeBSD: ignore case. OpenBSD: withdrawn. See -I. This sucks. */
if (opt_case)
usage (opt);
opt_case = REG_ICASE;
break;
/* case 'j': / * FreeBSD: restricted to the given jail ID * /
* break; */
case 'l': /* Solaris: long output format (pgrep only) Should require -f for beyond argv[0] maybe? */
opt_long = 1;
break;
case 'a':
opt_longlong = 1;
break;
case 'n': /* Solaris: match only the newest */
if (opt_oldest|opt_negate|opt_newest)
usage ('?');
opt_newest = 1;
++criteria_count;
break;
case 'o': /* Solaris: match only the oldest */
if (opt_oldest|opt_negate|opt_newest)
usage ('?');
opt_oldest = 1;
++criteria_count;
break;
case 's': /* Solaris: match by session ID -- zero means self */
opt_sid = split_list (optarg, conv_sid);
if (opt_sid == NULL)
usage ('?');
++criteria_count;
break;
case 't': /* Solaris: match by tty */
opt_term = split_list (optarg, conv_str);
if (opt_term == NULL)
usage ('?');
++criteria_count;
break;
case 'u': /* Solaris: match by euid/egroup */
opt_euid = split_list (optarg, conv_uid);
if (opt_euid == NULL)
usage ('?');
++criteria_count;
break;
case 'v': /* Solaris: as in grep, invert the matching (uh... applied after selection I think) */
if (opt_oldest|opt_negate|opt_newest)
usage ('?');
opt_negate = 1;
break;
case 'w': // Linux: show threads (lightweight process) too
opt_threads = 1;
break;
/* OpenBSD -x, being broken, does a plain string */
case 'x': /* Solaris: use ^(regexp)$ in place of regexp (FreeBSD too) */
opt_exact = 1;
break;
/* case 'z': / * Solaris: match by zone ID * /
* break; */
case NS_OPTION:
opt_ns_pid = atoi(optarg);
if (opt_ns_pid == 0)
usage ('?');
++criteria_count;
break;
case NSLIST_OPTION:
opt_nslist = split_list (optarg, conv_ns);
if (opt_nslist == NULL)
usage ('?');
break;
case 'h':
case '?':
usage (opt);
break;
}
}
if(opt_lock && !opt_pidfile)
xerrx(EXIT_USAGE, _("-L without -F makes no sense\n"
"Try `%s --help' for more information."),
program_invocation_short_name);
if(opt_pidfile){
opt_pid = read_pidfile();
if(!opt_pid)
xerrx(EXIT_FAILURE, _("pidfile not valid\n"
"Try `%s --help' for more information."),
program_invocation_short_name);
}
if (argc - optind == 1)
opt_pattern = argv[optind];
else if (argc - optind > 1)
xerrx(EXIT_USAGE, _("only one pattern can be provided\n"
"Try `%s --help' for more information."),
program_invocation_short_name);
else if (criteria_count == 0)
xerrx(EXIT_USAGE, _("no matching criteria specified\n"
"Try `%s --help' for more information."),
program_invocation_short_name);
}
int main (int argc, char **argv)
{
struct el *procs;
int num;
#ifdef HAVE_PROGRAM_INVOCATION_NAME
program_invocation_name = program_invocation_short_name;
#endif
setlocale (LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
atexit(close_stdout);
parse_opts (argc, argv);
procs = select_procs (&num);
if (i_am_pkill) {
int i;
for (i = 0; i < num; i++) {
if (kill (procs[i].num, opt_signal) != -1) {
if (opt_echo)
printf(_("%s killed (pid %lu)\n"), procs[i].str, procs[i].num);
continue;
}
if (errno==ESRCH)
/* gone now, which is OK */
continue;
xwarn(_("killing pid %ld failed"), procs[i].num);
}
if (opt_count)
fprintf(stdout, "%d\n", num);
} else {
if (opt_count) {
fprintf(stdout, "%d\n", num);
} else {
if (opt_long || opt_longlong)
output_strlist (procs,num);
else
output_numlist (procs,num);
}
}
return !num; /* exit(EXIT_SUCCESS) if match, otherwise exit(EXIT_FAILURE) */
}
Reference in New Issue View Git Blame Copy Permalink