summaryrefslogtreecommitdiff
path: root/entropy.c
diff options
context:
space:
mode:
authorDamien Miller <djm@mindrot.org>2000-10-16 20:13:43 +1100
committerDamien Miller <djm@mindrot.org>2000-10-16 20:13:43 +1100
commit52dc96b717fe2d2cd536ab73b728de60d931dd6a (patch)
treeffbe02034724db5d50b9d3daf91467723942dd1b /entropy.c
parentff649d888076a94033ebce016c85c5419a2c290b (diff)
- (djm) Make inability to read/write PRNG seedfile non-fatal
Diffstat (limited to 'entropy.c')
-rw-r--r--entropy.c33
1 files changed, 18 insertions, 15 deletions
diff --git a/entropy.c b/entropy.c
index e9608d0d..f4a655e0 100644
--- a/entropy.c
+++ b/entropy.c
@@ -35,7 +35,7 @@
# include <floatingpoint.h>
#endif /* HAVE_FLOATINGPOINT_H */
-RCSID("$Id: entropy.c,v 1.20 2000/09/29 01:12:36 djm Exp $");
+RCSID("$Id: entropy.c,v 1.21 2000/10/16 09:13:43 djm Exp $");
#ifndef offsetof
# define offsetof(type, member) ((size_t) &((type *)0)->member)
@@ -514,10 +514,10 @@ prng_check_seedfile(char *filename) {
/* FIXME raceable: eg replace seed between this stat and subsequent open */
/* Not such a problem because we don't trust the seed file anyway */
if (lstat(filename, &st) == -1) {
- /* Fail on hard errors */
+ /* Give up on hard errors */
if (errno != ENOENT)
- fatal("Couldn't stat random seed file \"%s\": %s", filename,
- strerror(errno));
+ debug("WARNING: Couldn't stat random seed file \"%s\": %s",
+ filename, strerror(errno));
return(0);
}
@@ -527,10 +527,12 @@ prng_check_seedfile(char *filename) {
fatal("PRNG seedfile %.100s is not a regular file", filename);
/* mode 0600, owned by root or the current user? */
- if (((st.st_mode & 0177) != 0) || !(st.st_uid == original_uid))
- fatal("PRNG seedfile %.100s must be mode 0600, owned by uid %d",
+ if (((st.st_mode & 0177) != 0) || !(st.st_uid == original_uid)) {
+ debug("WARNING: PRNG seedfile %.100s must be mode 0600, owned by uid %d",
filename, getuid());
-
+ return(0);
+ }
+
return(1);
}
@@ -569,15 +571,16 @@ prng_write_seedfile(void) {
/* Don't care if the seed doesn't exist */
prng_check_seedfile(filename);
- if ((fd = open(filename, O_WRONLY|O_TRUNC|O_CREAT, 0600)) == -1)
- fatal("couldn't access PRNG seedfile %.100s (%.100s)", filename,
- strerror(errno));
-
- if (atomicio(write, fd, &seed, sizeof(seed)) != sizeof(seed))
- fatal("problem writing PRNG seedfile %.100s (%.100s)", filename,
- strerror(errno));
+ if ((fd = open(filename, O_WRONLY|O_TRUNC|O_CREAT, 0600)) == -1) {
+ debug("WARNING: couldn't access PRNG seedfile %.100s (%.100s)",
+ filename, strerror(errno));
+ } else {
+ if (atomicio(write, fd, &seed, sizeof(seed)) != sizeof(seed))
+ fatal("problem writing PRNG seedfile %.100s (%.100s)", filename,
+ strerror(errno));
- close(fd);
+ close(fd);
+ }
}
void