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gspawn: Simplify set_cloexec

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The copy of this function that moved to glib-unix.c still needs to
implement the fdwalk-style interface, but this copy does not, allowing
us to turn it into a very simple syscall wrapper. Its remaining callers
never check for errors, and it never failed anyway, so remove the
returned value.

Signed-off-by: Simon McVittie <smcv@collabora.com>
This commit is contained in:
Simon McVittie 2024-02-05 20:29:26 +00:00
parent 69c1a05ede
commit a7d5a6b69a
1 changed files with 8 additions and 11 deletions
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19
glib/gspawn.c
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@ -1194,13 +1194,10 @@ write_err_and_exit (gint fd, gint msg)
/* This function is called between fork() and exec() and hence must be
* async-signal-safe (see signal-safety(7)). */
static int
set_cloexec (void *data, gint fd)
static void
set_cloexec (int fd)
{
if (fd >= GPOINTER_TO_INT (data))
fcntl (fd, F_SETFD, FD_CLOEXEC);
return 0;
fcntl (fd, F_SETFD, FD_CLOEXEC);
}
/* This function is called between fork() and exec() and hence must be
@ -1396,7 +1393,7 @@ do_exec (gint child_err_report_fd,
write_err_and_exit (child_err_report_fd,
CHILD_DUPFD_FAILED);
set_cloexec (GINT_TO_POINTER(0), stdin_fd);
set_cloexec (stdin_fd);
}
else if (!child_inherits_stdin)
{
@ -1434,7 +1431,7 @@ do_exec (gint child_err_report_fd,
write_err_and_exit (child_err_report_fd,
CHILD_DUPFD_FAILED);
set_cloexec (GINT_TO_POINTER(0), stdout_fd);
set_cloexec (stdout_fd);
}
else if (stdout_to_null)
{
@ -1466,7 +1463,7 @@ do_exec (gint child_err_report_fd,
write_err_and_exit (child_err_report_fd,
CHILD_DUPFD_FAILED);
set_cloexec (GINT_TO_POINTER(0), stderr_fd);
set_cloexec (stderr_fd);
}
else if (stderr_to_null)
{
@ -1491,7 +1488,7 @@ do_exec (gint child_err_report_fd,
{
if (safe_dup2 (child_err_report_fd, 3) < 0)
write_err_and_exit (child_err_report_fd, CHILD_DUPFD_FAILED);
set_cloexec (GINT_TO_POINTER (0), 3);
set_cloexec (3);
if (g_closefrom (4) < 0)
write_err_and_exit (child_err_report_fd, CHILD_CLOSE_FAILED);
child_err_report_fd = 3;
@ -1505,7 +1502,7 @@ do_exec (gint child_err_report_fd,
else
{
/* We need to do child_err_report_fd anyway */
set_cloexec (GINT_TO_POINTER (0), child_err_report_fd);
set_cloexec (child_err_report_fd);
}
/*