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Do cloexec on socketpairs and stdio files

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This commit is contained in:
Nick Mathewson 2010-11-20 01:16:29 -05:00
parent 5a66de7015
commit e669d25e43
4 changed files with 26 additions and 3 deletions
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21
src/common/compat.c
View File

@ -118,6 +118,18 @@ tor_open_cloexec(const char *path, int flags, unsigned mode)
#endif
}
/** DOCDOC */
FILE *
tor_fopen_cloexec(const char *path, const char *mode)
{
FILE *result = fopen(path, mode);
#ifdef FD_CLOEXEC
if (result != NULL)
fcntl(fileno(result), F_SETFD, FD_CLOEXEC);
#endif
return result;
}
#ifdef HAVE_SYS_MMAN_H
/** Try to create a memory mapping for <b>filename</b> and return it. On
* failure, return NULL. Sets errno properly, using ERANGE to mean
@ -1008,8 +1020,17 @@ tor_socketpair(int family, int type, int protocol, int fd[2])
//don't use win32 socketpairs (they are always bad)
#if defined(HAVE_SOCKETPAIR) && !defined(MS_WINDOWS)
int r;
#ifdef SOCK_CLOEXEC
type |= SOCK_CLOEXEC;
#endif
r = socketpair(family, type, protocol, fd);
if (r == 0) {
#ifndef SOCK_CLOEXEC
if (fd[0] >= 0)
fcntl(fd[0], F_SETFD, FD_CLOEXEC);
if (fd[1] >= 0)
fcntl(fd[1], F_SETFD, FD_CLOEXEC);
#endif
socket_accounting_lock();
if (fd[0] >= 0) {
++n_sockets_open;

4
src/common/compat.h
View File

@ -51,6 +51,8 @@
#include <netinet6/in6.h>
#endif
#include <stdio.h>
#if defined (WINCE)
#include <fcntl.h>
#include <io.h>
@ -340,8 +342,8 @@ struct tm *tor_gmtime_r(const time_t *timep, struct tm *result);
((tvp)->tv_sec cmp (uvp)->tv_sec))
/* ===== File compatibility */
int tor_open_cloexec(const char *path, int flags, unsigned mode);
FILE *tor_fopen_cloexec(const char *path, const char *mode);
int replace_file(const char *from, const char *to);
int touch_file(const char *fname);

2
src/or/dirserv.c
View File

@ -2445,7 +2445,7 @@ dirserv_read_measured_bandwidths(const char *from_file,
smartlist_t *routerstatuses)
{
char line[256];
FILE *fp = fopen(from_file, "r");
FILE *fp = tor_fopen_cloexec(from_file, "r");
int applied_lines = 0;
time_t file_time;
int ok;

2
src/or/geoip.c
View File

@ -206,7 +206,7 @@ geoip_load_file(const char *filename, or_options_t *options)
int severity = options_need_geoip_info(options, &msg) ? LOG_WARN : LOG_INFO;
crypto_digest_env_t *geoip_digest_env = NULL;
clear_geoip_db();
if (!(f = fopen(filename, "r"))) {
if (!(f = tor_fopen_cloexec(filename, "r"))) {
log_fn(severity, LD_GENERAL, "Failed to open GEOIP file %s. %s",
filename, msg);
return -1;