diff options
Diffstat (limited to 'login/utmp_file.c')
| -rw-r--r-- | login/utmp_file.c | 51 |
1 files changed, 25 insertions, 26 deletions
diff --git a/login/utmp_file.c b/login/utmp_file.c index 4e218d8baa..6d6e05b292 100644 --- a/login/utmp_file.c +++ b/login/utmp_file.c @@ -39,7 +39,7 @@ static struct utmp last_entry; /* Functions defined here. */ -static int setutent_file (int reset); +static int setutent_file (void); static int getutent_r_file (struct utmp *buffer, struct utmp **result); static int getutid_r_file (const struct utmp *key, struct utmp *buffer, struct utmp **result); @@ -63,41 +63,40 @@ struct utfuncs __libc_utmp_file_functions = static int -setutent_file (int reset) +setutent_file (void) { - if (file_fd == INT_MIN) + if (file_fd < 0) { - file_fd = open (__libc_utmp_file_name, O_RDWR); + const char *file_name = __libc_utmp_file_name; + + if (strcmp (__libc_utmp_file_name, _PATH_UTMP) == 0 + && __access (_PATH_UTMP "x", F_OK) == 0) + file_name = _PATH_UTMP "x"; + else if (strcmp (__libc_utmp_file_name, _PATH_WTMP) == 0 + && __access (_PATH_WTMP "x", F_OK) == 0) + file_name = _PATH_WTMP "x"; + + file_fd = open (file_name, O_RDWR); if (file_fd == -1) { /* Hhm, read-write access did not work. Try read-only. */ - file_fd = open (__libc_utmp_file_name, O_RDONLY); + file_fd = open (file_name, O_RDONLY); if (file_fd == -1) { perror (_("while opening UTMP file")); return 0; } } - file_offset = 0; - -#if _HAVE_UT_TYPE - 0 - /* Make sure the entry won't match. */ - last_entry.ut_type = -1; -#endif } - else if (reset) - { - lseek (file_fd, 0, SEEK_SET); - /* Remember we are at beginning of file. */ - file_offset = 0; + lseek (file_fd, 0, SEEK_SET); + file_offset = 0; #if _HAVE_UT_TYPE - 0 - /* Make sure the entry won't match. */ - last_entry.ut_type = -1; + /* Make sure the entry won't match. */ + last_entry.ut_type = -1; #endif - } - + return 1; } @@ -120,7 +119,7 @@ getutent_r_file (struct utmp *buffer, struct utmp **result) /* Open utmp file if not already done. */ if (file_fd == INT_MIN) - setutent_file (1); + setutent_file (); if (file_fd == -1 || file_offset == -1l) { @@ -348,14 +347,14 @@ pututline_file (const struct utmp *data) struct utmp *pbuf; int found; - if (file_fd < 0) + /* Open utmp file if not already done. */ + if (file_fd == INT_MIN) + setutent_file (); + + if (file_fd == -1) /* Something went wrong. */ return NULL; - if (file_fd == INT_MIN) - /* The file is closed. Open it again. */ - setutent_file (0); - /* Find the correct place to insert the data. */ if (file_offset > 0 && ( |