pgrep: Allow older than selection
Re-work merge request !79 of @edneville to permit older than selection using the new library API. References: procps-ng/procps!79
This commit is contained in:
Craig Small
parent
eeb8cf00a4
commit
9f751a7538
1
NEWS
1
NEWS
@ -3,6 +3,7 @@ procps-ng NEXT
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* kill: Pass int to signalled process merge #32
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* pgrep: Pass int to signalled process merge #32
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* pgrep: Check sanity of SG_ARG_MAX issue #152
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* pgrep: Add older than selection merge #79
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* pidof: show worker threads Redhat #1803640
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* ps.1: Mention stime alias issue #164
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* sysctl: Match systemd directory order
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5
pgrep.1
5
pgrep.1
@ -7,7 +7,7 @@
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.\" the Free Software Foundation; either version 2 of the License, or
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.\" (at your option) any later version.
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.\"
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.TH PGREP "1" "2020-04-24" "procps-ng" "User Commands"
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.TH PGREP "1" "2020-05-17" "procps-ng" "User Commands"
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.SH NAME
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pgrep, pkill \- look up or signal processes based on name and other attributes
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.SH SYNOPSIS
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@ -100,6 +100,9 @@ Select only the newest (most recently started) of the matching processes.
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\fB\-o\fR, \fB\-\-oldest\fR
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Select only the oldest (least recently started) of the matching processes.
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.TP
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\fB\-O\fR, \fB\-\-older\fR \fIsecs\fP
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Select processes older than secs.
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.TP
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\fB\-P\fR, \fB\-\-parent\fR \fIppid\fP,...
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Only match processes whose parent process ID is listed.
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.TP
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27
pgrep.c
27
pgrep.c
@ -36,6 +36,7 @@
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#include <errno.h>
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#include <getopt.h>
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#include <stdbool.h>
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#include <time.h>
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/* EXIT_SUCCESS is 0 */
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/* EXIT_FAILURE is 1 */
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@ -63,11 +64,12 @@ enum pids_item Items[] = {
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PIDS_TTY_NAME,
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PIDS_CMD,
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PIDS_CMDLINE,
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PIDS_STATE
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PIDS_STATE,
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PIDS_TIME_ELAPSED
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};
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enum rel_items {
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EU_PID, EU_PPID, EU_PGRP, EU_EUID, EU_RUID, EU_RGID, EU_SESSION,
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EU_TGID, EU_STARTTIME, EU_TTYNAME, EU_CMD, EU_CMDLINE, EU_STA
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EU_TGID, EU_STARTTIME, EU_TTYNAME, EU_CMD, EU_CMDLINE, EU_STA, EU_ELAPSED
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};
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#define grow_size(x) do { \
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if ((x) < 0 || (size_t)(x) >= INT_MAX / 5 / sizeof(struct el)) \
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@ -88,6 +90,7 @@ static int opt_full = 0;
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static int opt_long = 0;
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static int opt_longlong = 0;
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static int opt_oldest = 0;
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static int opt_older = 0;
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static int opt_newest = 0;
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static int opt_negate = 0;
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static int opt_exact = 0;
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@ -145,6 +148,7 @@ static int __attribute__ ((__noreturn__)) usage(int opt)
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fputs(_(" -i, --ignore-case match case insensitively\n"), fp);
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fputs(_(" -n, --newest select most recently started\n"), fp);
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fputs(_(" -o, --oldest select least recently started\n"), fp);
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fputs(_(" -O, --older <seconds> select where older than seconds\n"), fp);
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fputs(_(" -P, --parent <PPID,...> match only child processes of the given parent\n"), fp);
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fputs(_(" -s, --session <SID,...> match session IDs\n"), fp);
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fputs(_(" -t, --terminal <tty,...> match by controlling terminal\n"), fp);
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@ -525,9 +529,15 @@ static struct el * select_procs (int *num)
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char *cmdoutput = xmalloc(cmdlen);
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char *task_cmdline;
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enum pids_fetch_type which;
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time_t now;
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double uptime_secs;
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preg = do_regcomp();
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now = time(NULL);
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if (procps_uptime(&uptime_secs, NULL) < 0)
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xerrx(EXIT_FAILURE, "uptime");
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if (opt_newest) saved_start_time = 0ULL;
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else saved_start_time = ~0ULL;
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@ -538,7 +548,7 @@ static struct el * select_procs (int *num)
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_("Error reading reference namespace information\n"));
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}
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if (procps_pids_new(&info, Items, 13) < 0)
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if (procps_pids_new(&info, Items, 14) < 0)
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xerrx(EXIT_FATAL,
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_("Unable to create pid info structure"));
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which = PIDS_FETCH_TASKS_ONLY;
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@ -570,9 +580,11 @@ static struct el * select_procs (int *num)
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match = 0;
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else if (opt_ns_pid && ! match_ns (PIDS_GETINT(PID), &nsp))
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match = 0;
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else if (opt_older && PIDS_GETULL(ELAPSED) < opt_older)
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match = 0;
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else if (opt_term)
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match = match_strlist(PIDS_GETSTR(TTYNAME), opt_term);
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else if (opt_runstates && ! strchr(opt_runstates, PIDS_GETSCH(STA)))
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else if (opt_runstates && ! strchr(opt_runstates, PIDS_GETSCH(STA)))
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match = 0;
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task_cmdline = PIDS_GETSTR(CMDLINE);
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@ -686,6 +698,7 @@ static void parse_opts (int argc, char **argv)
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{"ignore-case", no_argument, NULL, 'i'},
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{"newest", no_argument, NULL, 'n'},
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{"oldest", no_argument, NULL, 'o'},
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{"older", required_argument, NULL, 'O'},
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{"parent", required_argument, NULL, 'P'},
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{"session", required_argument, NULL, 's'},
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{"terminal", required_argument, NULL, 't'},
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@ -719,7 +732,7 @@ static void parse_opts (int argc, char **argv)
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strcat (opts, "lad:vw");
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}
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strcat (opts, "LF:cfinoxP:g:s:u:U:G:t:r:?Vh");
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strcat (opts, "LF:cfinoxP:O:g:s:u:U:G:t:r:?Vh");
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while ((opt = getopt_long (argc, argv, opts, longopts, NULL)) != -1) {
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switch (opt) {
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@ -815,6 +828,10 @@ static void parse_opts (int argc, char **argv)
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opt_oldest = 1;
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++criteria_count;
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break;
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case 'O':
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opt_older = atoi (optarg);
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++criteria_count;
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break;
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case 's': /* Solaris: match by session ID -- zero means self */
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opt_sid = split_list (optarg, conv_sid);
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if (opt_sid == NULL)
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