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author | Roland McGrath <roland@gnu.org> | 1996-07-18 08:43:26 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1996-07-18 08:43:26 +0000 |
commit | 49b986270035c7f86c3dc85383fd1da2e413fef9 (patch) | |
tree | 5b1236203c804457e180793a67e3e0e4b489a3d8 /login/pututline_r.c | |
parent | d7bca0d30b5d3c8ae8421a1994ba24b1b56370d7 (diff) | |
download | glibc-49b986270035c7f86c3dc85383fd1da2e413fef9.tar.gz glibc-49b986270035c7f86c3dc85383fd1da2e413fef9.tar.xz glibc-49b986270035c7f86c3dc85383fd1da2e413fef9.zip |
Thu Jul 18 04:33:21 1996 Roland McGrath <roland@baalperazim.frob.com> cvs/libc-960718
* sysdeps/mach/hurd/errnos.awk: Move EWOULDBLOCK check before errno==0 check. mib's clueless hacking broke it. Thu Jul 18 04:27:21 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * Makerules ($(libdir)/libc.so): Add missing / after $(cryptobjdir). Wed Jul 17 10:54:20 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/unix/sysv/linux/alpha/start.S: Move to ... * sysdeps/alpha/elf/start.S: here. * misc/sys/ustat.h: New file. * misc/ustat.h: Ditto. * sysdeps/generic/ustatbits.h: Ditto. * libc-orig/sysdeps/stub/ustat.c: Ditto. * sysdeps/unix/sysv/linux/ustatbits.h: Ditto. * misc/Makefile (headers): Mention ustat.h, sys/ustat.h, and ustatbits.h. (routines): Mention ustat. * sysdeps/unix/sysv/linux/syscalls.list: Mention klogctl in alphabetically correct place. Mention ustat. * sysdeps/unix/alpha/sysdep.S: Make errno a bss symbol, not a common symbol (makes errno accessible from gdb). * login/pututline_r.c (pututline_r): Test ut_id in repositioning test, not ut_type. * login/logwtmp.c (logwtmp): Reimplemented. Must ensure that a record always gets appended at end of file (wtmp is a log file, after all). Set ut_type to DEAD_PROCESS if name is empty. * login/getutid_r.c (getutid_r): Handle search for UT_TYPE in separate loop from search for UT_ID. Fix code so it is in sync with Unix man page. * login/getutline_r.c (getutline_r): Stop searching only if ut_line matches and type is either USER_PROCESS or LOGIN_PROCESS. Tue Jul 16 15:06:18 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/unix/sysv/linux/netinet/in.h: Base on <linux/in.h> to avoid duplicate declarations. Sun Jul 14 19:08:55 1996 David Mosberger-Tang <davidm@azstarnet.com> * manual/maint.texi (Supported Configurations): Add alpha-gnu-linux and alpha-gnu-linuxecoff targets. Fri Jul 12 16:58:44 1996 David Mosberger-Tang <davidm@azstarnet.com> * sysdeps/unix/sysv/linux/netinet/in.h: Declare bindresvport(). Sat Jun 22 23:30:07 1996 David Mosberger-Tang <davidm@azstarnet.com> * resolv/res_send.c (res_send): Declare FROMLEN as size_t instead of int. * resolv/res_comp.c (res_hnok): Use empty statement in place of NULL (which generates a "useless expression" warning in gcc).
Diffstat (limited to 'login/pututline_r.c')
-rw-r--r-- | login/pututline_r.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/login/pututline_r.c b/login/pututline_r.c index 4c9a91fdec..42994e899f 100644 --- a/login/pututline_r.c +++ b/login/pututline_r.c @@ -58,12 +58,15 @@ pututline_r (const struct utmp *id, struct utmp_data *utmp_data) return -1; } -#if _HAVE_UT_TYPE - 0 - /* Seek position to write. */ - if (utmp_data->loc_utmp >= sizeof (struct utmp) - && utmp_data->ubuf.ut_type != id->ut_type) +#if _HAVE_UT_ID - 0 + /* Check whether we need to reposition. Repositioning is necessary + either if the data in UTMP_DATA is not valid or if the ids don't + match: */ + if (utmp_data->loc_utmp < (off_t) sizeof (struct utmp) + || strncmp(utmp_data->ubuf.ut_id, id->ut_id, sizeof (id->ut_id)) != 0) { - /* We must not overwrite the data in UTMP_DATA. */ + /* We must not overwrite the data in UTMP_DATA since ID may be + aliasing it. */ struct utmp_data *data_tmp = alloca (sizeof (*data_tmp)); struct utmp *dummy; @@ -77,7 +80,7 @@ pututline_r (const struct utmp *id, struct utmp_data *utmp_data) pointer now is at the end of the file. */ return -1; - /* Set position pointer to position after adding of the record. */ + /* Set position pointer to position behind the record. */ utmp_data->loc_utmp += sizeof (struct utmp); } } @@ -98,7 +101,7 @@ pututline_r (const struct utmp *id, struct utmp_data *utmp_data) if (result >= 0) /* Position file correctly. */ - if (utmp_data->loc_utmp < sizeof (struct utmp)) + if (utmp_data->loc_utmp < (off_t) sizeof (struct utmp)) /* Not located at any valid entry. Add at the end. */ { result = lseek (utmp_data->ut_fd, 0L, SEEK_END); |