113 lines
3.6 KiB
Diff
113 lines
3.6 KiB
Diff
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From d9b3415d2a761cb7669a67f5309665335d5eb4c4 Mon Sep 17 00:00:00 2001
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From: rpm-build <rpm-build>
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Date: Mon, 9 Nov 2020 16:10:22 +0100
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Subject: [PATCH] New '-w' option for kernel workers.
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---
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pidof.1 | 3 +++
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pidof.c | 17 ++++++++++++-----
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2 files changed, 15 insertions(+), 5 deletions(-)
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diff --git a/pidof.1 b/pidof.1
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index 1368704..c85c088 100644
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--- a/pidof.1
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+++ b/pidof.1
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@@ -45,6 +45,9 @@ the current root directory of processes they do not own.
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.IP \-x
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Scripts too - this causes the program to also return process id's of
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shells running the named scripts.
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+.IP \-w
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+Show also processes that do not have visible command line (e.g. kernel
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+worker threads).
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.IP "-o \fIomitpid\fP"
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Tells \fIpidof\fP to omit processes with that process id. The special
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pid \fB%PPID\fP can be used to name the parent process of the \fIpidof\fP
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diff --git a/pidof.c b/pidof.c
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index 94e19bb..7fdf27a 100644
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--- a/pidof.c
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+++ b/pidof.c
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@@ -55,6 +55,8 @@ static char *program = NULL;
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static int opt_single_shot = 0; /* -s */
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static int opt_scripts_too = 0; /* -x */
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static int opt_rootdir_check = 0; /* -c */
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+static int opt_with_workers = 0; /* -w */
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+
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static char *pidof_root = NULL;
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@@ -69,6 +71,7 @@ static int __attribute__ ((__noreturn__)) usage(int opt)
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fputs(_(" -s, --single-shot return one PID only\n"), fp);
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fputs(_(" -c, --check-root omit processes with different root\n"), fp);
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fputs(_(" -x also find shells running the named scripts\n"), fp);
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+ fputs(_(" -w, --with-workers show kernel workers too\n"), fp);
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fputs(_(" -o, --omit-pid <PID,...> omit processes with PID\n"), fp);
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fputs(_(" -S, --separator SEP use SEP as separator put between PIDs"), fp);
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fputs(USAGE_SEPARATOR, fp);
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@@ -142,7 +145,6 @@ static void select_procs (void)
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static int size = 0;
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char *cmd_arg0, *cmd_arg0base;
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char *cmd_arg1, *cmd_arg1base;
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- char *stat_cmd;
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char *program_base;
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char *root_link;
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char *exe_link;
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@@ -168,10 +170,9 @@ static void select_procs (void)
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}
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}
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- if (!is_omitted(task.XXXID)) {
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+ if (!is_omitted(task.XXXID) && ((task.cmdline && *task.cmdline) || opt_with_workers)) {
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cmd_arg0 = (task.cmdline && *task.cmdline) ? *task.cmdline : "\0";
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- stat_cmd = task.cmd ? task.cmd : "\0";
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/* processes starting with '-' are login shells */
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if (*cmd_arg0 == '-') {
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@@ -193,7 +194,7 @@ static void select_procs (void)
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!strcmp(program_base, cmd_arg0) ||
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!strcmp(program, cmd_arg0) ||
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- !strcmp(program, stat_cmd) ||
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+ (opt_with_workers && !strcmp(program, task.cmd)) ||
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!strcmp(program, exe_link_base) ||
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!strcmp(program, exe_link))
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@@ -293,13 +294,14 @@ int main (int argc, char **argv)
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int first_pid = 1;
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const char *separator = " ";
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- const char *opts = "scnxmo:S:?Vh";
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+ const char *opts = "scnxwmo:S:?Vh";
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static const struct option longopts[] = {
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{"check-root", no_argument, NULL, 'c'},
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{"single-shot", no_argument, NULL, 's'},
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{"omit-pid", required_argument, NULL, 'o'},
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{"separator", required_argument, NULL, 's'},
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+ {"with-workers", no_argument, NULL, 'w'},
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{"help", no_argument, NULL, 'h'},
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{"version", no_argument, NULL, 'V'},
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{NULL, 0, NULL, 0}
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@@ -325,6 +327,9 @@ int main (int argc, char **argv)
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case 'x':
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opt_scripts_too = 1;
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break;
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+ case 'w':
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+ opt_with_workers = 1;
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+ break;
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case 'c':
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if (geteuid() == 0) {
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opt_rootdir_check = 1;
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@@ -358,6 +363,8 @@ int main (int argc, char **argv)
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program = argv[optind++];
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+ if (*program == '\0') continue;
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+
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select_procs(); /* get the list of matching processes */
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if (proc_count) {
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--
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2.25.4
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