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patch 8.0.0980: Coverity warning for failing to open /dev/null

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Problem:    Coverity warning for failing to open /dev/null.
Solution:   When /dev/null can't be opened exit the child.
This commit is contained in:
Bram Moolenaar
2017-08-21 21:07:29 +02:00
parent eef0531621
commit b109bb4e12
2 changed files with 10 additions and 0 deletions
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8
src/os_unix.c
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@@ -4340,6 +4340,7 @@ mch_call_shell(
# define EXEC_FAILED 122 /* Exit code when shell didn't execute. Don't use
127, some shells use that already */
# define OPEN_NULL_FAILED 123 /* Exit code if /dev/null can't be opened */
char_u *newcmd;
pid_t pid;
@@ -5369,7 +5370,14 @@ mch_job_start(char **argv, job_T *job, jobopt_T *options)
}
if (use_null_for_in || use_null_for_out || use_null_for_err)
{
null_fd = open("/dev/null", O_RDWR | O_EXTRA, 0);
if (null_fd < 0)
{
perror("opening /dev/null failed");
_exit(OPEN_NULL_FAILED);
}
}
if (pty_slave_fd >= 0)
{