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authorRincewindsHat <12514511+RincewindsHat@users.noreply.github.com>2021-12-02 16:42:05 +0100
committerGitHub <noreply@github.com>2021-12-02 16:42:05 +0100
commit911e44045d7291f5ede22739fd176ef55dd3de4a (patch)
treecf36b95a4a964b03d6ecf75770ced2cb3a2ac3a9 /plugins/popen.c
parent8294af907bd8482a86df749f562b7ec09e3faeed (diff)
parented7cdf82a42f16532801ea4f118870ce9a130fcf (diff)
downloadmonitoring-plugins-911e44045d7291f5ede22739fd176ef55dd3de4a.tar.gz
Merge branch 'master' into fix/shellcheck
Diffstat (limited to 'plugins/popen.c')
-rw-r--r--plugins/popen.c85
1 files changed, 4 insertions, 81 deletions
diff --git a/plugins/popen.c b/plugins/popen.c
index 592263fd..9eb49b62 100644
--- a/plugins/popen.c
+++ b/plugins/popen.c
@@ -39,9 +39,9 @@
39*****************************************************************************/ 39*****************************************************************************/
40 40
41#include "common.h" 41#include "common.h"
42#include "utils.h"
42 43
43/* extern so plugin has pid to kill exec'd process on timeouts */ 44/* extern so plugin has pid to kill exec'd process on timeouts */
44extern int timeout_interval;
45extern pid_t *childpid; 45extern pid_t *childpid;
46extern int *child_stderr_array; 46extern int *child_stderr_array;
47extern FILE *child_process; 47extern FILE *child_process;
@@ -76,18 +76,9 @@ RETSIGTYPE popen_timeout_alarm_handler (int);
76#define SIG_ERR ((Sigfunc *)-1) 76#define SIG_ERR ((Sigfunc *)-1)
77#endif 77#endif
78 78
79#define min(a,b) ((a) < (b) ? (a) : (b))
80#define max(a,b) ((a) > (b) ? (a) : (b))
81int open_max (void); /* {Prog openmax} */
82static void err_sys (const char *, ...) __attribute__((noreturn,format(printf, 1, 2)));
83char *rtrim (char *, const char *);
84 79
85char *pname = NULL; /* caller can set this from argv[0] */ 80char *pname = NULL; /* caller can set this from argv[0] */
86 81
87/*int *childerr = NULL;*//* ptr to array allocated at run-time */
88/*extern pid_t *childpid = NULL; *//* ptr to array allocated at run-time */
89static int maxfd; /* from our open_max(), {Prog openmax} */
90
91#ifdef REDHAT_SPOPEN_ERROR 82#ifdef REDHAT_SPOPEN_ERROR
92static volatile int childtermd = 0; 83static volatile int childtermd = 0;
93#endif 84#endif
@@ -186,14 +177,15 @@ spopen (const char *cmdstring)
186 } 177 }
187 argv[i] = NULL; 178 argv[i] = NULL;
188 179
180 if(maxfd == 0)
181 maxfd = open_max();
182
189 if (childpid == NULL) { /* first time through */ 183 if (childpid == NULL) { /* first time through */
190 maxfd = open_max (); /* allocate zeroed out array for child pids */
191 if ((childpid = calloc ((size_t)maxfd, sizeof (pid_t))) == NULL) 184 if ((childpid = calloc ((size_t)maxfd, sizeof (pid_t))) == NULL)
192 return (NULL); 185 return (NULL);
193 } 186 }
194 187
195 if (child_stderr_array == NULL) { /* first time through */ 188 if (child_stderr_array == NULL) { /* first time through */
196 maxfd = open_max (); /* allocate zeroed out array for child pids */
197 if ((child_stderr_array = calloc ((size_t)maxfd, sizeof (int))) == NULL) 189 if ((child_stderr_array = calloc ((size_t)maxfd, sizeof (int))) == NULL)
198 return (NULL); 190 return (NULL);
199 } 191 }
@@ -273,15 +265,6 @@ spclose (FILE * fp)
273 return (1); 265 return (1);
274} 266}
275 267
276#ifdef OPEN_MAX
277static int openmax = OPEN_MAX;
278#else
279static int openmax = 0;
280#endif
281
282#define OPEN_MAX_GUESS 256 /* if OPEN_MAX is indeterminate */
283 /* no guarantee this is adequate */
284
285#ifdef REDHAT_SPOPEN_ERROR 268#ifdef REDHAT_SPOPEN_ERROR
286RETSIGTYPE 269RETSIGTYPE
287popen_sigchld_handler (int signo) 270popen_sigchld_handler (int signo)
@@ -309,63 +292,3 @@ popen_timeout_alarm_handler (int signo)
309 exit (STATE_CRITICAL); 292 exit (STATE_CRITICAL);
310 } 293 }
311} 294}
312
313
314int
315open_max (void)
316{
317 if (openmax == 0) { /* first time through */
318 errno = 0;
319 if ((openmax = sysconf (_SC_OPEN_MAX)) < 0) {
320 if (errno == 0)
321 openmax = OPEN_MAX_GUESS; /* it's indeterminate */
322 else
323 err_sys (_("sysconf error for _SC_OPEN_MAX"));
324 }
325 }
326 return (openmax);
327}
328
329
330/* Fatal error related to a system call.
331 * Print a message and die. */
332
333#define MAXLINE 2048
334static void
335err_sys (const char *fmt, ...)
336{
337 int errnoflag = 1;
338 int errno_save;
339 char buf[MAXLINE];
340
341 va_list ap;
342
343 va_start (ap, fmt);
344 /* err_doit (1, fmt, ap); */
345 errno_save = errno; /* value caller might want printed */
346 vsprintf (buf, fmt, ap);
347 if (errnoflag)
348 sprintf (buf + strlen (buf), ": %s", strerror (errno_save));
349 strcat (buf, "\n");
350 fflush (stdout); /* in case stdout and stderr are the same */
351 fputs (buf, stderr);
352 fflush (NULL); /* flushes all stdio output streams */
353 va_end (ap);
354 exit (1);
355}
356
357char *
358rtrim (char *str, const char *tok)
359{
360 int i = 0;
361 int j = sizeof (str);
362
363 while (str != NULL && i < j) {
364 if (*(str + i) == *tok) {
365 sprintf (str + i, "%s", "\0");
366 return str;
367 }
368 i++;
369 }
370 return str;
371}