Merged revisions 191367 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

........
  r191367 | tilghman | 2009-04-30 12:40:58 -0500 (Thu, 30 Apr 2009) | 3 lines
  
  Detect eaccess (or euidaccess) before using it.
  Reported by Andrew Lindh via the -dev list.
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@191369 65c4cc65-6c06-0410-ace0-fbb531ad65f3

configure.ac

@@ -328,7 +328,7 @@ AC_FUNC_STRNLEN
 AC_FUNC_STRTOD
 AC_FUNC_UTIME_NULL
 AC_FUNC_VPRINTF
-AC_CHECK_FUNCS([asprintf atexit dup2 endpwent ftruncate getcwd gethostbyname gethostname getloadavg gettimeofday ioperm inet_ntoa isascii localtime_r memchr memmove memset mkdir munmap putenv re_comp regcomp select setenv socket strcasecmp strcasestr strchr strcspn strdup strerror strlcat strlcpy strncasecmp strndup strnlen strrchr strsep strspn strstr strtol strtoq unsetenv utime vasprintf])
+AC_CHECK_FUNCS([asprintf atexit dup2 eaccess endpwent euidaccess ftruncate getcwd gethostbyname gethostname getloadavg gettimeofday ioperm inet_ntoa isascii localtime_r memchr memmove memset mkdir munmap putenv re_comp regcomp select setenv socket strcasecmp strcasestr strchr strcspn strdup strerror strlcat strlcpy strncasecmp strndup strnlen strrchr strsep strspn strstr strtol strtoq unsetenv utime vasprintf])
 
 AC_CHECK_FUNCS([glob])
 

include/asterisk/autoconfig.h.in

@@ -199,9 +199,15 @@
 /* Define to 1 if you have the `dup2' function. */
 #undef HAVE_DUP2
 
+/* Define to 1 if you have the `eaccess' function. */
+#undef HAVE_EACCESS
+
 /* Define to 1 if you have the `endpwent' function. */
 #undef HAVE_ENDPWENT
 
+/* Define to 1 if you have the `euidaccess' function. */
+#undef HAVE_EUIDACCESS
+
 /* Define this to indicate the ${EXP_DESCRIP} library */
 #undef HAVE_EXP
 
@@ -1127,6 +1133,9 @@
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 
+/* Define to 1 if the C compiler supports function prototypes. */
+#undef PROTOTYPES
+
 /* Define to necessary symbol if this constant uses a non-standard name on
    your system. */
 #undef PTHREAD_CREATE_JOINABLE
@@ -1143,6 +1152,11 @@
 /* Define to the type of arg 5 for `select'. */
 #undef SELECT_TYPE_ARG5
 
+/* Define to 1 if the `setvbuf' function takes the buffering type as its
+   second argument and the buffer pointer as the third, as on System V before
+   release 3. */
+#undef SETVBUF_REVERSED
+
 /* The size of `int', as computed by sizeof. */
 #undef SIZEOF_INT
 
@@ -1163,30 +1177,20 @@
 /* Define to 1 if your <sys/time.h> declares `struct tm'. */
 #undef TM_IN_SYS_TIME
 
-/* Enable extensions on AIX 3, Interix.  */
+/* Define to 1 if on AIX 3.
+   System headers sometimes define this.
+   We just want to avoid a redefinition error message.  */
 #ifndef _ALL_SOURCE
 # undef _ALL_SOURCE
 #endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#undef _FILE_OFFSET_BITS
+
 /* Enable GNU extensions on systems that have them.  */
 #ifndef _GNU_SOURCE
 # undef _GNU_SOURCE
 #endif
-/* Enable threading extensions on Solaris.  */
-#ifndef _POSIX_PTHREAD_SEMANTICS
-# undef _POSIX_PTHREAD_SEMANTICS
-#endif
-/* Enable extensions on HP NonStop.  */
-#ifndef _TANDEM_SOURCE
-# undef _TANDEM_SOURCE
-#endif
-/* Enable general extensions on Solaris.  */
-#ifndef __EXTENSIONS__
-# undef __EXTENSIONS__
-#endif
-
-
-/* Number of bits in a file offset, on hosts where this is settable. */
-#undef _FILE_OFFSET_BITS
 
 /* Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2). */
 #undef _LARGEFILE_SOURCE
@@ -1204,6 +1208,20 @@
 /* Define to 1 if you need to in order for `stat' and other things to work. */
 #undef _POSIX_SOURCE
 
+/* Enable extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+
+/* Define like PROTOTYPES; this can be used by system headers. */
+#undef __PROTOTYPES
+
 /* Define to empty if `const' does not conform to ANSI C. */
 #undef const
 

main/asterisk.c

@@ -3277,26 +3277,33 @@ int main(int argc, char *argv[])
 	if (geteuid() && ast_opt_dump_core) {
 		if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) < 0) {
 			ast_log(LOG_WARNING, "Unable to set the process for core dumps after changing to a non-root user. %s\n", strerror(errno));
-		}	
+		}
 	}
+#endif
 
 	{
+#if defined(HAVE_EACCESS) || defined(HAVE_EUIDACCESS)
+#if defined(HAVE_EUIDACCESS) && !defined(HAVE_EACCESS)
+#define eaccess euidaccess
+#endif
 		char dir[PATH_MAX];
 		if (!getcwd(dir, sizeof(dir)) || eaccess(dir, R_OK | X_OK | F_OK)) {
 			ast_log(LOG_ERROR, "Unable to access the running directory (%s).  Changing to '/' for compatibility.\n", strerror(errno));
 			/* If we cannot access the CWD, then we couldn't dump core anyway,
 			 * so chdir("/") won't break anything. */
 			if (chdir("/")) {
-				ast_log(LOG_ERROR, "chdir() failed?!! %s\n", strerror(errno));
+				/* chdir(/) should never fail, so this ends up being a no-op */
+				ast_log(LOG_ERROR, "chdir(\"/\") failed?!! %s\n", strerror(errno));
 			}
-		} else if (!ast_opt_no_fork && !ast_opt_dump_core) {
+		} else
+#endif /* defined(HAVE_EACCESS) || defined(HAVE_EUIDACCESS) */
+		if (!ast_opt_no_fork && !ast_opt_dump_core) {
 			/* Backgrounding, but no cores, so chdir won't break anything. */
 			if (chdir("/")) {
 				ast_log(LOG_ERROR, "Unable to chdir(\"/\") ?!! %s\n", strerror(errno));
 			}
 		}
 	}
-#endif
 
 	ast_term_init();
 	printf("%s", term_end());