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Merge remote-tracking branch 'origin/patches-2.0'

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This commit is contained in:
Nick Mathewson 2012-02-11 21:20:47 -05:00
commit 2793197663
4 changed files with 33 additions and 4 deletions
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4
arc4random.c
View File

@ -261,7 +261,7 @@ arc4_seed_proc_sys_kernel_random_uuid(void)
unsigned char entropy[64];
int bytes, n, i, nybbles;
for (bytes = 0; bytes<ADD_ENTROPY; ) {
fd = open("/proc/sys/kernel/random/uuid", O_RDONLY, 0);
fd = evutil_open_closeonexec("/proc/sys/kernel/random/uuid", O_RDONLY, 0);
if (fd < 0)
return -1;
n = read(fd, buf, sizeof(buf));
@ -305,7 +305,7 @@ arc4_seed_urandom(void)
size_t n;
for (i = 0; filenames[i]; ++i) {
fd = open(filenames[i], O_RDONLY, 0);
fd = evutil_open_closeonexec(filenames[i], O_RDONLY, 0);
if (fd<0)
continue;
n = read_all(fd, buf, sizeof(buf));

2
devpoll.c
View File

@ -132,7 +132,7 @@ devpoll_init(struct event_base *base)
nfiles = rl.rlim_cur;
/* Initialize the kernel queue */
if ((dpfd = open("/dev/poll", O_RDWR)) == -1) {
if ((dpfd = evutil_open_closeonexec("/dev/poll", O_RDWR, 0)) == -1) {
event_warn("open: /dev/poll");
mm_free(devpollop);
return (NULL);

26
evutil.c
View File

@ -96,6 +96,30 @@
#define stat _stati64
#endif
int
evutil_open_closeonexec(const char *pathname, int flags, unsigned mode)
{
int fd;
#ifdef O_CLOEXEC
flags |= O_CLOEXEC;
#endif
if (flags & O_CREAT)
fd = open(pathname, flags, (mode_t)mode);
else
fd = open(pathname, flags);
if (fd < 0)
return -1;
#if !defined(O_CLOEXEC) && defined(FD_CLOEXEC)
if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
return -1;
#endif
return fd;
}
/**
Read the contents of 'filename' into a newly allocated NUL-terminated
string. Set *content_out to hold this string, and *len_out to hold its
@ -126,7 +150,7 @@ evutil_read_file(const char *filename, char **content_out, size_t *len_out,
mode |= O_BINARY;
#endif
fd = open(filename, mode);
fd = evutil_open_closeonexec(filename, mode, 0);
if (fd < 0)
return -1;
if (fstat(fd, &st) || st.st_size < 0 ||

5
util-internal.h
View File

@ -163,6 +163,11 @@ char EVUTIL_TOLOWER(char c);
#define EVUTIL_UPCAST(ptr, type, field) \
((type *)(((char*)(ptr)) - evutil_offsetof(type, field)))
/* As open(pathname, flags, mode), except that the file is always opened with
* the close-on-exec flag set. (And the mode argument is mandatory.)
*/
int evutil_open_closeonexec(const char *pathname, int flags, unsigned mode);
int evutil_read_file(const char *filename, char **content_out, size_t *len_out,
int is_binary);