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authorRoland McGrath <roland@gnu.org>1996-05-24 21:42:06 +0000
committerRoland McGrath <roland@gnu.org>1996-05-24 21:42:06 +0000
commit41f27456aca79bb327a6312a801d6804b9e4197f (patch)
tree1ba8bbd37aaff62befb85753ae2419999ed2403b /login
parent613a76ff52a680e71db772306a260b9cb7f95b49 (diff)
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Fri May 24 17:30:50 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* login/pututline_r.c: Use struct assignment instead of memcpy. * login/getutline_r.c: Use strncmp instead of comparing two pointers that will only be equal if you are overwriting the data and screwing yourself anyway.
Diffstat (limited to 'login')
-rw-r--r--login/getutline_r.c3
-rw-r--r--login/pututline_r.c8
2 files changed, 6 insertions, 5 deletions
diff --git a/login/getutline_r.c b/login/getutline_r.c
index 62c8c2f..84c77cb 100644
--- a/login/getutline_r.c
+++ b/login/getutline_r.c
@@ -53,7 +53,8 @@ getutline_r (const struct utmp *line, struct utmp **utmp,
/* Update position pointer. */
utmp_data->loc_utmp += sizeof (struct utmp);
}
- while (line->ut_line != utmp_data->ubuf.ut_line);
+ while (strncmp (line->ut_line, utmp_data->ubuf.ut_line,
+ sizeof line->ut_line));
*utmp = &utmp_data->ubuf;
diff --git a/login/pututline_r.c b/login/pututline_r.c
index 365a376..92ba8fb 100644
--- a/login/pututline_r.c
+++ b/login/pututline_r.c
@@ -44,9 +44,9 @@ pututline_r (const struct utmp *utmp_ptr, struct utmp_data *utmp_data)
struct utmp_data *data_tmp = alloca (sizeof (utmp_data));
struct utmp *dummy;
- memcpy (data_tmp, utmp_data, sizeof (utmp_data));
+ *data_tmp = *utmp_data;
utmp_data = data_tmp;
-
+
if (getutid_r (utmp_ptr, &dummy, utmp_data) < 0)
{
if (errno != ESRCH)
@@ -66,7 +66,7 @@ pututline_r (const struct utmp *utmp_ptr, struct utmp_data *utmp_data)
/* XXX An alternative solution would be to call an SUID root program
which write the new value. */
-
+
/* Try to lock the file. */
if (flock (utmp_data->ut_fd, LOCK_EX | LOCK_NB) < 0 && errno != ENOSYS)
{
@@ -76,7 +76,7 @@ pututline_r (const struct utmp *utmp_ptr, struct utmp_data *utmp_data)
/* This time we ignore the error. */
(void) flock (utmp_data->ut_fd, LOCK_EX | LOCK_NB);
}
-
+
/* Write the new data. */
if (write (utmp_data->ut_fd, &utmp_data->ubuf, sizeof (struct utmp))
!= sizeof (struct utmp))