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DetermineClientCmd: try using /proc/pid/cmdline on Solaris too

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Solaris 11.3.5 introduced support for /proc/pid/cmdline, so try it
first, and if we can't open it, then fallback to /proc/pid/psinfo
as we did before.

Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
This commit is contained in:
Alan Coopersmith
2017-02-12 09:35:21 -08:00
committed by Adam Jackson
parent 3f9507ed2f
commit 4c00609c37
1 changed files with 47 additions and 39 deletions
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86
os/client.c
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@@ -142,45 +142,7 @@ DetermineClientCmd(pid_t pid, const char **cmdname, const char **cmdargs)
if (pid == -1)
return;
#ifdef __sun /* Solaris */
/* Solaris does not support /proc/pid/cmdline, but makes information
* similar to what ps shows available in a binary structure in the
* /proc/pid/psinfo file. */
if (snprintf(path, sizeof(path), "/proc/%d/psinfo", pid) < 0)
return;
fd = open(path, O_RDONLY);
if (fd < 0) {
ErrorF("Failed to open %s: %s\n", path, strerror(errno));
return;
}
else {
psinfo_t psinfo = { 0 };
char *sp;
totsize = read(fd, &psinfo, sizeof(psinfo_t));
close(fd);
if (totsize <= 0)
return;
/* pr_psargs is the first PRARGSZ (80) characters of the command
* line string - assume up to the first space is the command name,
* since it's not delimited. While there is also pr_fname, that's
* more limited, giving only the first 16 chars of the basename of
* the file that was exec'ed, thus cutting off many long gnome
* command names, or returning "isapython2.6" for all python scripts.
*/
psinfo.pr_psargs[PRARGSZ - 1] = '\0';
sp = strchr(psinfo.pr_psargs, ' ');
if (sp)
*sp++ = '\0';
if (cmdname)
*cmdname = strdup(psinfo.pr_psargs);
if (cmdargs && sp)
*cmdargs = strdup(sp);
}
#elif defined(__OpenBSD__)
#if defined(__OpenBSD__)
/* on OpenBSD use kvm_getargv() */
{
kvm_t *kd;
@@ -221,7 +183,11 @@ DetermineClientCmd(pid_t pid, const char **cmdname, const char **cmdargs)
return;
fd = open(path, O_RDONLY);
if (fd < 0)
#ifdef __sun
goto fallback;
#else
return;
#endif
/* Read the contents of /proc/pid/cmdline. It should contain the
* process name and arguments. */
@@ -256,6 +222,48 @@ DetermineClientCmd(pid_t pid, const char **cmdname, const char **cmdargs)
*cmdargs = args;
}
}
return;
#endif
#ifdef __sun /* Solaris */
fallback:
/* Solaris prior to 11.3.5 does not support /proc/pid/cmdline, but
* makes information similar to what ps shows available in a binary
* structure in the /proc/pid/psinfo file. */
if (snprintf(path, sizeof(path), "/proc/%d/psinfo", pid) < 0)
return;
fd = open(path, O_RDONLY);
if (fd < 0) {
ErrorF("Failed to open %s: %s\n", path, strerror(errno));
return;
}
else {
psinfo_t psinfo = { 0 };
char *sp;
totsize = read(fd, &psinfo, sizeof(psinfo_t));
close(fd);
if (totsize <= 0)
return;
/* pr_psargs is the first PRARGSZ (80) characters of the command
* line string - assume up to the first space is the command name,
* since it's not delimited. While there is also pr_fname, that's
* more limited, giving only the first 16 chars of the basename of
* the file that was exec'ed, thus cutting off many long gnome
* command names, or returning "isapython2.6" for all python scripts.
*/
psinfo.pr_psargs[PRARGSZ - 1] = '\0';
sp = strchr(psinfo.pr_psargs, ' ');
if (sp)
*sp++ = '\0';
if (cmdname)
*cmdname = strdup(psinfo.pr_psargs);
if (cmdargs && sp)
*cmdargs = strdup(sp);
}
#endif
}