From: Eric Bollengier <eric@baculasystems.com>
Date: Fri, 18 Sep 2015 06:49:27 +0000 (+0200)
Subject: Fix segfault in open_bpipe() when the program is empty
X-Git-Tag: Release-7.4.0~195
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=b22f312a99b3e55f902a70190a4b2a57207aa44a;p=bacula%2Fbacula

Fix segfault in open_bpipe() when the program is empty
---

diff --git a/bacula/src/lib/bpipe.c b/bacula/src/lib/bpipe.c
index 81d673fd69..c0ef83a633 100644
--- a/bacula/src/lib/bpipe.c
+++ b/bacula/src/lib/bpipe.c
@@ -74,6 +74,12 @@ BPIPE *open_bpipe(char *prog, int wait, const char *mode, char *envp[])
    BPIPE *bpipe;
    int save_errno;
 
+   if (!prog || !*prog) {
+      /* execve(3) A component of the file does not name an existing file or file is an empty string. */
+      errno = ENOENT; 
+      return NULL;
+   }
+   
    bpipe = (BPIPE *)malloc(sizeof(BPIPE));
    memset(bpipe, 0, sizeof(BPIPE));
    mode_read = (mode[0] == 'r');