ps: possibility to display machine name for a process
Library systemd-login offers possibility to display the name of the VM or container which process belongs to. This patch adds output option "sd_machine" which will show machine name or "-" when the name can not be determined. To maintain compatibility with non-systemd systems, procps must be configured with --with-systemd option to enable this option.
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@ -269,8 +269,8 @@ AC_ARG_WITH([systemd],
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[], [with_systemd=no])
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if test "x$with_systemd" != xno; then
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PKG_CHECK_MODULES([SYSTEMD], [libsystemd-login], [], [
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AC_CHECK_LIB(systemd-login, sd_pid_get_unit, [have_systemd=yes], [have_systemd=no])
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PKG_CHECK_MODULES([SYSTEMD], [libsystemd-login >= 202], [], [
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AC_CHECK_LIB(systemd-login, sd_pid_get_machine_name, [have_systemd=yes], [have_systemd=no])
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if test "x$have_systemd" = xno; then
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AC_MSG_ERROR([systemd support missing/incomplete])
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fi
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16
ps/output.c
16
ps/output.c
@ -1224,7 +1224,22 @@ fail:
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return 1;
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}
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static int pr_sd_machine(char *restrict const outbuf, const proc_t *restrict const pp){
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int r;
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size_t len;
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char *machine;
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r = sd_pid_get_machine_name(pp->tgid, &machine);
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if(r<0) goto fail;
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len = snprintf(outbuf, COLWID, "%s", machine);
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free(machine);
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return len;
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fail:
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outbuf[0] = '-';
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outbuf[1] = '\0';
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return 1;
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}
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#endif
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/****************** FLASK & seLinux security stuff **********************/
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// move the bulk of this to libproc sometime
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@ -1553,6 +1568,7 @@ static const format_struct format_array[] = {
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{"scnt", "SCNT", pr_nop, sr_nop, 4, 0, DEC, AN|RIGHT}, /* man page misspelling of scount? */
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{"scount", "SC", pr_nop, sr_nop, 4, 0, AIX, AN|RIGHT}, /* scnt==scount, DEC claims both */
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#ifdef WITH_SYSTEMD
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{"sd_machine","MACHINE", pr_sd_machine, sr_nop, 31, 0, LNX, ET|LEFT},
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{"sd_ouid", "OWNER", pr_sd_ouid, sr_nop, 5, 0, LNX, ET|LEFT},
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{"sd_session","SESSION", pr_sd_session, sr_nop, 11, 0, LNX, ET|LEFT},
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{"sd_unit", "UNIT", pr_sd_unit, sr_nop, 31, 0, LNX, ET|LEFT},
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4
ps/ps.1
4
ps/ps.1
@ -1489,6 +1489,10 @@ SCHED_FIFO, SCHED_RR, SCHED_BATCH, SCHED_ISO, and SCHED_IDLE are respectively
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displayed as 0, 1, 2, 3, 4, and 5.
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T}
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sd_machine MACHINE T{
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displays machine name for processes assigned to VM or container.
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T}
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sd_ouid OWNER T{
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displays the Unix user identifier of the owner of the session of a process.
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T}
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