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authorUlrich Drepper <drepper@redhat.com>1996-08-19 01:07:44 +0000
committerUlrich Drepper <drepper@redhat.com>1996-08-19 01:07:44 +0000
commit39778c6c9e6455303979aca2dc4685bf56cdc9be (patch)
tree9dcdd44d6e7df176f7724ac8ab674a82a947947c /login
parente9d258b798f0c2e46433d2bd483e4fd47cc00915 (diff)
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update from main archive 960818cvs/libc-960820cvs/libc-960819
Diffstat (limited to 'login')
-rw-r--r--login/pututline_r.c20
1 files changed, 7 insertions, 13 deletions
diff --git a/login/pututline_r.c b/login/pututline_r.c
index 0b81900..55436bf 100644
--- a/login/pututline_r.c
+++ b/login/pututline_r.c
@@ -64,7 +64,8 @@ __pututline_r (const struct utmp *id, struct utmp_data *utmp_data)
match: */
if (id->ut_id[0]
&& (utmp_data->loc_utmp < (off_t) sizeof (struct utmp)
- || strncmp(utmp_data->ubuf.ut_id, id->ut_id, sizeof (id->ut_id)) != 0))
+ || strncmp (utmp_data->ubuf.ut_id, id->ut_id,
+ sizeof (id->ut_id)) != 0))
{
/* We must not overwrite the data in UTMP_DATA since ID may be
aliasing it. */
@@ -74,16 +75,8 @@ __pututline_r (const struct utmp *id, struct utmp_data *utmp_data)
*data_tmp = *utmp_data;
utmp_data = data_tmp;
- if (getutid_r (id, &dummy, utmp_data) < 0)
- {
- if (errno != ESRCH)
- /* Some error occured. If no entry was found, the position
- pointer now is at the end of the file. */
- return -1;
-
- /* Set position pointer to position behind the record. */
- utmp_data->loc_utmp += sizeof (struct utmp);
- }
+ if (getutid_r (id, &dummy, utmp_data) < 0 && errno != ESRCH)
+ return -1;
}
#endif
@@ -102,7 +95,8 @@ __pututline_r (const struct utmp *id, struct utmp_data *utmp_data)
if (result >= 0)
/* Position file correctly. */
- if (utmp_data->loc_utmp < (off_t) sizeof (struct utmp))
+ if (utmp_data->loc_utmp < (off_t) sizeof (struct utmp)
+ || utmp_data->loc_utmp - sizeof (struct utmp) > st.st_size)
/* Not located at any valid entry. Add at the end. */
{
result = lseek (utmp_data->ut_fd, 0L, SEEK_END);
@@ -110,7 +104,7 @@ __pututline_r (const struct utmp *id, struct utmp_data *utmp_data)
/* Where we'll be if the write succeeds. */
utmp_data->loc_utmp = st.st_size + sizeof (struct utmp);
}
- else if (utmp_data->loc_utmp <= st.st_size)
+ else
result =
lseek (utmp_data->ut_fd, utmp_data->loc_utmp - sizeof (struct utmp),
SEEK_SET);