-.TH KILLALL 1 2007-08-09 "Linux" "User Commands"
+.TH KILLALL 1 2009-12-18 "Linux" "User Commands"
.SH NAME
killall \- kill processes by name
.SH SYNOPSIS
.RB [ \-e , \-\-exact ]
.RB [ \-g , \-\-process\-group ]
.RB [ \-i , \-\-interactive ]
+.RB [ \-o , \-\-older\-than
+.IR TIME ]
.RB [ \-q , \-\-quiet ]
.RB [ \-r , \-\-regexp ]
.RB [ \-s , \-\-signal
.IR user ]
.RB [ \-v , \-\-verbose ]
.RB [ \-w , \-\-wait ]
+.RB [ \-y , \-\-younger\-than
+.IR TIME ]
.RB [ \-I , \-\-ignore-case ]
.RB [ \-V, \-\-version ]
.RB [ \-\- ]
Interactively ask for confirmation before killing.
.IP "\fB\-l\fP, \fB\-\-list\fP"
List all known signal names.
+.IP "\fB\-o\fP, \fB\-\-older\-than\fP"
+Match only processes that are older (started before) the time specified.
+The time is specified as a float then a unit. The units are s,m,h,d,w,M,y for
+seconds, minutes, hours, days, weeks, Months and years respectively.
.IP "\fB\-q\fP, \fB\-\-quiet\fP"
Do not complain if no processes were killed.
.IP "\fB\-r\fP, \fB\-\-regexp\fP"
any of the killed processes still exist and only returns if none are left.
Note that \fBkillall\fP may wait forever if the signal was ignored, had no
effect, or if the process stays in zombie state.
+.IP "\fB\-y\fP, \fB\-\-younger\-than\fP"
+Match only processes that are older (started after) the time specified.
+The time is specified as a float then a unit. The units are s,m,h,d,w,M,y for
+seconds, minutes, hours, days, weeks, Months and years respectively.
.IP "\fB\-Z\fP, \fB\-\-context\fP"
(SELinux Only) Specify security context: kill only processes having security
context that match with given expended regular expression pattern. Must precede
#define PROC_BASE "/proc"
#define MAX_NAMES (int)(sizeof(unsigned long)*8)
-#define TSECOND "sec"
-#define TMINUTE "min"
-#define THOUR "hour"
-#define TDAY "day"
-#define TWEEK "WEEK"
-#define TMONTH "MON"
-#define TYEAR "YEAR"
+#define TSECOND "s"
+#define TMINUTE "m"
+#define THOUR "h"
+#define TDAY "d"
+#define TWEEK "w"
+#define TMONTH "M"
+#define TYEAR "y"
#define TMAX_SECOND 31536000
#define TMAX_MINUTE 525600
#define ER_UNKWN -3
#define ER_OOFRA -4
+#define NOT_PIDOF_OPTION if (pidof) usage(NULL)
+
static int verbose = 0, exact = 0, interactive = 0, reg = 0,
quiet = 0, wait_until_dead = 0, process_group = 0,
younger_than = 0, older_than = 0,
static time_t
parse_time_units(const char* age)
{
- regex_t preg;
- if ( 0 == regcomp(&preg, "^[0-9]{1,8}[a-zA-Z]{1,8}$", REG_NOSUB | REG_EXTENDED)) {
- int ret = regexec(&preg, age, (size_t)0, NULL, 0);
- regfree(&preg);
- if ( 0 != ret )
- return ER_REGFAIL;
- }
-
- time_t res;
- char * savelocale;
- savelocale = setlocale(LC_ALL, NULL);
- setlocale(LC_NUMERIC,"C");
-
- unsigned int i;
- for (i=0; i<strlen(age); i++) {
- if ( isdigit( (int)age[i] ) )
- continue;
- else
- break;
+ char *unit;
+ time_t numbll;
+
+ numbll = strtoll(age,&unit,10);
+ if (age == unit) /* no digits found */
+ return -1;
+ if (unit[0] == '\0') /* no units found */
+ return -1;
+
+ switch(unit[0]) {
+ case 's':
+ return numbll;
+ case 'm':
+ return (numbll * 60);
+ case 'h':
+ return (numbll * 60 * 60);
+ case 'd':
+ return (numbll * 60 * 60 * 24);
+ case 'w':
+ return (numbll * 60 * 60 * 24 * 7);
+ case 'M':
+ return (numbll * 60 * 60 * 24 * 7 * 4);
+ case 'y':
+ return (numbll * 60 * 60 * 24 * 7 * 4 * 12);
}
-
- char *numb, *unit;
- if ( NULL == (numb = calloc(sizeof(char), i +1)))
- return ER_NOMEM;
- if ( NULL == (unit = calloc(sizeof(char), strlen(age) -i +1))) {
- free(numb);
- return ER_NOMEM;
- };
-
- strncpy(numb, &age[0], i +1);
- strncpy(unit, &age[i], strlen(age) - i +1);
- time_t numbll = atoll(numb);
-
- if ( (strlen(unit) == strlen(TSECOND)) && (0 == strncmp(TSECOND, unit, strlen(TSECOND))))
- res = numbll <= TMAX_SECOND ? numbll : ER_OOFRA;
-
- else if ( (strlen(unit) == strlen(TMINUTE)) && (0 == strncmp(TMINUTE, unit, strlen(TMINUTE))))
- res = numbll <= TMAX_MINUTE ? numbll * 60 : ER_OOFRA;
-
- else if ( (strlen(unit) == strlen(THOUR)) && (0 == strncmp(THOUR, unit, strlen(THOUR))))
- res = numbll <=TMAX_HOUR ? numbll * 60 * 60 : ER_OOFRA;
-
- else if ( (strlen(unit) == strlen(TDAY) ) && (0 == strncmp(TDAY, unit, strlen(TDAY))))
- res = numbll <= TMAX_DAY ? numbll * 60 * 60 * 24 : ER_OOFRA;
-
- else if ( (strlen(unit) == strlen(TWEEK) ) && (0 == strncmp(TWEEK, unit, strlen(TWEEK))))
- res = numbll <= TMAX_WEEK ? numbll * 60 * 60 * 24 * 7 : ER_OOFRA;
-
- else if ( (strlen(unit) == strlen(TMONTH) ) && (0 == strncmp(TMONTH, unit, strlen(TMONTH))))
- res = numbll <= TMAX_MONTH ? numbll * 60 * 60 * 24 * 7 * 4 : ER_OOFRA;
-
- else if ( (strlen(unit) == strlen(TYEAR) ) && (0 == strncmp(TYEAR, unit, strlen(TYEAR))))
- res = numbll <= TMAX_YEAR ? numbll * 60 * 60 * 24 * 7 * 4 * 12 : ER_OOFRA;
- else
- res = ER_UNKWN;
-
- free(numb);
- free(unit);
- setlocale(LC_ALL,savelocale);
-
- return res;
+ return -1;
}
static int
static void
-usage_killall (void)
+usage_killall (const char *msg)
{
+ if (msg != NULL)
+ fprintf(stderr, "%s\n", msg);
#ifdef WITH_SELINUX
fprintf(stderr, _(
"Usage: killall [-Z CONTEXT] [-u USER] [ -eIgiqrvw ] [ -SIGNAL ] NAME...\n"));
" -e,--exact require exact match for very long names\n"
" -I,--ignore-case case insensitive process name match\n"
" -g,--process-group kill process group instead of process\n"
- " -y,--younger-than kill processes younger than Nsec,min,hour,day,WEEK,MON,YEAR\n"
- " -o,--older-than kill processes older than Nsec,min,hour,day,WEEK,MON,YEAR\n"
+ " -y,--younger-than kill processes younger than TIME\n"
+ " -o,--older-than kill processes older than TIME\n"
" -i,--interactive ask for confirmation before killing\n"
" -l,--list list all known signal names\n"
" -q,--quiet don't print complaints\n"
static void
-usage (void)
+usage (const char *msg)
{
if (pidof)
usage_pidof ();
else
- usage_killall ();
+ usage_killall (msg);
exit (1);
}
security_context_t scontext = NULL;
regex_t scontext_reg;
- if ( argc < 2 ) usage(); /* do the obvious thing... */
+ if ( argc < 2 ) usage(NULL); /* do the obvious thing... */
#endif /*WITH_SELINUX*/
name = strrchr (*argv, '/');
while ( (optc = getopt_long_only(argc,argv,"egy:o:ilqrs:u:vwVI",options,NULL)) != -1) {
#endif
switch (optc) {
- case 'e':
- exact = 1;
- break;
- case 'g':
- process_group = 1;
- break;
- case 'y':
- if (pidof)
- usage();
- strncpy(yt, optarg, 16);
- if ( 0 >= (younger_than = parse_time_units(yt) ) )
- usage();
- break;
- case 'o':
- if (pidof)
- usage();
- strncpy(ot, optarg, 16);
- if ( 0 >= (older_than = parse_time_units(ot) ) )
- usage();
- break;
- case 'i':
- if (pidof)
- usage();
- interactive = 1;
- break;
- case 'l':
- if (pidof)
- usage();
- list_signals();
- return 0;
- break;
- case 'q':
- if (pidof)
- usage();
- quiet = 1;
- break;
- case 'r':
- if (pidof)
- usage();
- reg = 1;
- break;
- case 's':
- sig_num = get_signal (optarg, "killall");
- break;
- case 'u':
- if (pidof)
- usage();
- if (!(pwent = getpwnam(optarg)))
- {
- fprintf (stderr, _("Cannot find user %s\n"), optarg);
- exit (1);
- }
- break;
- case 'v':
- if (pidof)
- usage();
- verbose = 1;
- break;
- case 'w':
- if (pidof)
- usage();
- wait_until_dead = 1;
- break;
- case 'I':
- ignore_case = 1;
- break;
- case 'V':
- print_version();
- return 0;
- break;
+ case 'e':
+ exact = 1;
+ break;
+ case 'g':
+ process_group = 1;
+ break;
+ case 'y':
+ NOT_PIDOF_OPTION;
+ strncpy(yt, optarg, 16);
+ if ( 0 >= (younger_than = parse_time_units(yt) ) )
+ usage(_("Invalid time format"));
+ break;
+ case 'o':
+ NOT_PIDOF_OPTION;
+ strncpy(ot, optarg, 16);
+ if ( 0 >= (older_than = parse_time_units(ot) ) )
+ usage(_("Invalid time format"));
+ break;
+ case 'i':
+ NOT_PIDOF_OPTION;
+ interactive = 1;
+ break;
+ case 'l':
+ NOT_PIDOF_OPTION;
+ list_signals();
+ return 0;
+ break;
+ case 'q':
+ NOT_PIDOF_OPTION;
+ quiet = 1;
+ break;
+ case 'r':
+ NOT_PIDOF_OPTION;
+ reg = 1;
+ break;
+ case 's':
+ sig_num = get_signal (optarg, "killall");
+ break;
+ case 'u':
+ NOT_PIDOF_OPTION;
+ if (!(pwent = getpwnam(optarg))) {
+ fprintf (stderr, _("Cannot find user %s\n"), optarg);
+ exit (1);
+ }
+ break;
+ case 'v':
+ NOT_PIDOF_OPTION;
+ verbose = 1;
+ break;
+ case 'w':
+ NOT_PIDOF_OPTION;
+ wait_until_dead = 1;
+ break;
+ case 'I':
+ ignore_case = 1;
+ break;
+ case 'V':
+ print_version();
+ return 0;
+ break;
#ifdef WITH_SELINUX
- case 'Z':
- if (is_selinux_enabled()>0) {
- scontext=optarg;
- if (regcomp(&scontext_reg, scontext, REG_EXTENDED|REG_NOSUB) != 0) {
- fprintf(stderr, _("Bad regular expression: %s\n"), scontext);
- exit (1);
- }
- } else
- fprintf(stderr, "Warning: -Z (--context) ignored. Requires an SELinux enabled kernel\n");
- break;
+ case 'Z':
+ if (is_selinux_enabled()>0) {
+ scontext=optarg;
+ if (regcomp(&scontext_reg, scontext, REG_EXTENDED|REG_NOSUB) != 0) {
+ fprintf(stderr, _("Bad regular expression: %s\n"), scontext);
+ exit (1);
+ }
+ } else
+ fprintf(stderr, "Warning: -Z (--context) ignored. Requires an SELinux enabled kernel\n");
+ break;
#endif /*WITH_SELINUX*/
- case '?':
- /* Signal names are in uppercase, so check to see if the argv
- * is upper case */
- if (argv[optind-1][1] >= 'A' && argv[optind-1][1] <= 'Z') {
- sig_num = get_signal (argv[optind-1]+1, "killall");
+ case '?':
+ /* Signal names are in uppercase, so check to see if the argv
+ * is upper case */
+ if (argv[optind-1][1] >= 'A' && argv[optind-1][1] <= 'Z') {
+ sig_num = get_signal (argv[optind-1]+1, "killall");
+ } else {
+ /* Might also be a -## signal too */
+ if (argv[optind-1][1] >= '0' && argv[optind-1][1] <= '9') {
+ sig_num = atoi(argv[optind-1]+1);
} else {
- /* Might also be a -## signal too */
- if (argv[optind-1][1] >= '0' && argv[optind-1][1] <= '9') {
- sig_num = atoi(argv[optind-1]+1);
- } else {
- usage();
- }
+ usage(NULL);
}
- break;
+ }
+ break;
}
}
myoptind = optind;
#else
if ((argc - myoptind < 1) && pwent==NULL)
#endif
- usage();
+ usage(NULL);
- if (argc - myoptind > MAX_NAMES + 1)
- {
- fprintf (stderr, _("Maximum number of names is %d\n"), MAX_NAMES);
- exit (1);
- }
- if (stat("/proc/self/stat", &isproc)==-1)
- {
- fprintf (stderr, _("%s is empty (not mounted ?)\n"), PROC_BASE);
- exit (1);
- }
+ if (argc - myoptind > MAX_NAMES + 1) {
+ fprintf (stderr, _("Maximum number of names is %d\n"), MAX_NAMES);
+ exit (1);
+ }
+ if (stat("/proc/self/stat", &isproc)==-1) {
+ fprintf (stderr, _("%s is empty (not mounted ?)\n"), PROC_BASE);
+ exit (1);
+ }
argv = argv + myoptind;
/*printf("sending signal %d to procs\n", sig_num);*/
#ifdef WITH_SELINUX
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