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sysdeps-unix: check fd before calling _dbus_fd_set_close_on_exec()

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If /proc/self/oom_score_adj does not exist, fd will invalid (-1).
Attempting to set the CLOEXEC flag will obviously fail, and we lose the
original errno value from open().

Bug: https://bugs.gentoo.org/834725
Signed-off-by: Mike Gilbert <floppym@gentoo.org>
This commit is contained in:
Mike Gilbert 2022-03-27 15:09:48 -04:00 • committed by Simon McVittie
parent b56cad123c
commit 769a0462be
1 changed files with 2 additions and 1 deletions
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3
dbus/dbus-sysdeps-util-unix.c
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@ -1633,7 +1633,8 @@ _dbus_reset_oom_score_adj (const char **error_str_p)
if (fd < 0)
{
fd = open ("/proc/self/oom_score_adj", O_RDWR);
_dbus_fd_set_close_on_exec (fd);
if (fd >= 0)
_dbus_fd_set_close_on_exec (fd);
}
if (fd >= 0)