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lib/util: Make prctl_set_comment take a printf format string

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This makes it easier to pass a small amount of variable information
into the buffer, to distinguish processes in the AD DC.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14287

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
This commit is contained in:
Andrew Bartlett 2020-02-22 09:06:19 +13:00
parent 575d39048e
commit efb3aa95c5
3 changed files with 12 additions and 4 deletions
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10
lib/util/util_process.c
View File

@ -20,15 +20,21 @@
*/
#include "util_process.h"
#include "config.h"
#include "replace.h"
#ifdef HAVE_SYS_PRCTL_H
#include <sys/prctl.h>
#endif
int prctl_set_comment(const char *comment)
int prctl_set_comment(const char *comment_format, ...)
{
#if defined(HAVE_PRCTL) && defined(PR_SET_NAME)
char comment[16];
va_list ap;
va_start(ap, comment_format);
vsnprintf(comment, sizeof(comment), comment_format, ap);
va_end(ap);
return prctl(PR_SET_NAME, (unsigned long) comment, 0, 0, 0);
#endif
return 0;

4
lib/util/util_process.h
View File

@ -22,6 +22,8 @@
#ifndef _SAMBA_UTIL_PROCESS_H
#define _SAMBA_UTIL_PROCESS_H
#include "replace.h"
/**
* @brief Set the process comment name.
*
@ -30,6 +32,6 @@
*
* @return -1 on error, 0 on success.
*/
int prctl_set_comment(const char *comment);
int prctl_set_comment(const char *comment_format, ...) PRINTF_ATTRIBUTE(1,2);
#endif

2
source3/lib/util.c
View File

@ -513,7 +513,7 @@ NTSTATUS reinit_after_fork(struct messaging_context *msg_ctx,
}
if (comment) {
prctl_set_comment(comment);
prctl_set_comment("%s", comment);
}
done: