nihilist/tor
1
0
Fork 0
mirror of https://gitlab.torproject.org/tpo/core/tor.git synced 2024-11-24 20:33:31 +01:00
Code Issues Packages Projects Releases Wiki Activity

Obviate need for doing a CLOEXEC on pipes: just close them before exec

Browse Source
This commit is contained in:
Nick Mathewson 2010-11-20 01:24:30 -05:00
parent e669d25e43
commit b4f56dd4c6
1 changed files with 11 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
src/common/util.c
View File

@ -2986,7 +2986,7 @@ tor_spawn_background(const char *const filename, int *stdout_read,
child_state = CHILD_STATE_REDIRECT;
/* Link stdin to /dev/null */
fd = open("/dev/null", O_RDONLY);
fd = open("/dev/null", O_RDONLY); /* NOT cloexec, obviously. */
if (fd != -1)
dup2(STDIN_FILENO, fd);
else
@ -2994,11 +2994,18 @@ tor_spawn_background(const char *const filename, int *stdout_read,
child_state = CHILD_STATE_CLOSEFD;
close(stderr_pipe[0]);
close(stderr_pipe[1]);
close(stdout_pipe[0]);
close(stdout_pipe[1]);
close(fd);
/* Close all other fds, including the read end of the pipe */
/* XXX: use closefrom if available, or better still set FD_CLOEXEC
on all of Tor's open files */
for (fd = STDERR_FILENO + 1; fd < max_fd; fd++)
/* XXX: We should now be doing enough FD_CLOEXEC setting to make
* this needless. */
for (fd = STDERR_FILENO + 1; fd < max_fd; fd++) {
close(fd);
}
child_state = CHILD_STATE_EXEC;