shadow/lib/nscd.c
Adam Sampson 0e6fe5e728 lib: rename Prog to shadow_progname, with only one definition
The build was failing with duplicate symbol errors with -fno-common.
This is the default in GCC 10 and later, and explicitly enabled in some
distributions to catch problems like this. There were two causes:

- Prog and shadow_logfd were defined in a header file that was included
  in multiple other files. Fix this by defining them once in
  shadowlog.c, and having extern declarations in the header.

- Most of the tools (except id/nologin) also define a Prog variable,
  which is not intended to alias the one in the library. Fix
  this by renaming Prog in the library to shadow_progname, which also
  matches the new accessor functions for it.
2021-12-25 22:41:58 +00:00

59 lines
1.7 KiB
C

/* Author: Peter Vrabec <pvrabec@redhat.com> */
#include <config.h>
#ifdef USE_NSCD
#include <stdio.h>
#include <sys/wait.h>
#include <sys/types.h>
#include "exitcodes.h"
#include "defines.h"
#include "prototypes.h"
#include "nscd.h"
#include "shadowlog_internal.h"
#define MSG_NSCD_FLUSH_CACHE_FAILED "%s: Failed to flush the nscd cache.\n"
/*
* nscd_flush_cache - flush specified service buffer in nscd cache
*/
int nscd_flush_cache (const char *service)
{
int status, code;
const char *cmd = "/usr/sbin/nscd";
const char *spawnedArgs[] = {"nscd", "-i", service, NULL};
const char *spawnedEnv[] = {NULL};
if (run_command (cmd, spawnedArgs, spawnedEnv, &status) != 0) {
/* run_command writes its own more detailed message. */
(void) fprintf (shadow_logfd, _(MSG_NSCD_FLUSH_CACHE_FAILED), shadow_progname);
return -1;
}
code = WEXITSTATUS (status);
if (!WIFEXITED (status)) {
(void) fprintf (shadow_logfd,
_("%s: nscd did not terminate normally (signal %d)\n"),
shadow_progname, WTERMSIG (status));
return -1;
} else if (code == E_CMD_NOTFOUND) {
/* nscd is not installed, or it is installed but uses an
interpreter that is missing. Probably the former. */
return 0;
} else if (code == 1) {
/* nscd is installed, but it isn't active. */
return 0;
} else if (code != 0) {
(void) fprintf (shadow_logfd, _("%s: nscd exited with status %d\n"),
shadow_progname, code);
(void) fprintf (shadow_logfd, _(MSG_NSCD_FLUSH_CACHE_FAILED), shadow_progname);
return -1;
}
return 0;
}
#else /* USE_NSCD */
extern int errno; /* warning: ANSI C forbids an empty source file */
#endif /* USE_NSCD */