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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2020-12-11 15:23:05 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2021-01-11 12:26:58 -0300
commit42dda89dcb0407f6799dbfd0b9dab1529666ad51 (patch)
tree895e367e9d4cd02a94205bf63e6387c6f05af7f1 /stdlib/tst-system.c
parent7b9c3260bcca73781dda6bc2ddee84869bedfb8c (diff)
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posix: Fix return value of system if shell can not be executed [BZ #27053]
POSIX states that system returned code for failure to execute the shell
shall be as if the shell had terminated using _exit(127).  This
behaviour was removed with 5fb7fc96350575.

Checked on x86_64-linux-gnu.
Diffstat (limited to 'stdlib/tst-system.c')
-rw-r--r--stdlib/tst-system.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/stdlib/tst-system.c b/stdlib/tst-system.c
index 95a2615d95..178808e048 100644
--- a/stdlib/tst-system.c
+++ b/stdlib/tst-system.c
@@ -26,6 +26,7 @@
 #include <support/check.h>
 #include <support/temp_file.h>
 #include <support/support.h>
+#include <support/xunistd.h>
 
 static char *tmpdir;
 static long int namemax;
@@ -138,6 +139,22 @@ do_test (void)
     support_capture_subprocess_check (&result, "system", 0, sc_allow_none);
   }
 
+  {
+    struct stat64 st;
+    xstat (_PATH_BSHELL, &st);
+    mode_t mode = st.st_mode;
+    xchmod (_PATH_BSHELL, mode & ~(S_IXUSR | S_IXGRP | S_IXOTH));
+
+    struct support_capture_subprocess result;
+    result = support_capture_subprocess (call_system,
+					 &(struct args) {
+					   "exit 1", 127, 0
+					 });
+    support_capture_subprocess_check (&result, "system", 0, sc_allow_none);
+
+    xchmod (_PATH_BSHELL, st.st_mode);
+  }
+
   TEST_COMPARE (system (""), 0);
 
   return 0;