diff options
Diffstat (limited to 'login')
| -rw-r--r-- | login/pututline_r.c | 20 |
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); |