diff options
| author | Ulrich Drepper <drepper@redhat.com> | 1998-10-25 09:11:53 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1998-10-25 09:11:53 +0000 |
| commit | 4a582094c28099144dac9528174ce7c0be72c0fd (patch) | |
| tree | 647f7c06d86df0e42887c2db744578bf71a991fc /libio/fileops.c | |
| parent | 88455219c104124f82cc11d038b17cb249c4b6bd (diff) | |
| download | glibc-4a582094c28099144dac9528174ce7c0be72c0fd.tar.gz glibc-4a582094c28099144dac9528174ce7c0be72c0fd.tar.xz glibc-4a582094c28099144dac9528174ce7c0be72c0fd.zip | |
Update.
1998-10-25 Ulrich Drepper <drepper@cygnus.com> * include/features.h: Define __USE_POSIS199506 is _POSIX_C_SOURCE is greater or equal than 199506L. * sysdeps/generic/bits/types.h (__fd_set): Define element as fds_bits only is __USE_XOPEN. Otherwise use __fds_bits. * sysdeps/unix/sysv/linux/alpha/bits/types.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/types.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h: Likewise. * sysdeps/unix/sysv/linux/bits/types.h: Likewise. * sysdeps/unix/sysv/sysv4/solaris2/bits/types.h: Likewise. 1998-10-24 H.J. Lu <hjl@gnu.org> * locale/programs/charmap.c (parse_charmap): Accept tok_string for <code_set_name>. 1998-10-25 H.J. Lu <hjl@gnu.org> * locale/programs/ld-ctype.c (ctype_finish): Also check <space>. 1998-10-25 Ulrich Drepper <drepper@cygnus.com> * signal/signal.h: Include bits/sigthread.h only if __USE_POSIX199506. * sysdeps/unix/sysv/linux/bits/types.h: Include pthreadtypes.h only if __USE_POSIX199506 or __USE_UNIX98. 1998-10-24 22:34 -0400 Zack Weinberg <zack@rabi.phys.columbia.edu> * string/bits/string2.h: Inline strdup+friends only if __USE_MISC || __USE_GNU (prevents namespace pollution). 1998-10-24 H.J. Lu <hjl@gnu.org> * sysdeps/unix/sysv/linux/alpha/bits/fcntl.h (LOCK_SH, LOCK_EX, LOCK_NB, LOCK_UN): Protect with __USE_BSD. * sysdeps/unix/sysv/linux/i386/bits/fcntl.h (LOCK_SH, LOCK_EX, LOCK_NB, LOCK_UN): Likewise. * sysdeps/unix/sysv/linux/mips/bits/fcntl.h (LOCK_SH, LOCK_EX, LOCK_NB, LOCK_UN): Likewise. * sysdeps/unix/sysv/linux/sparc/bits/fcntl.h (LOCK_SH, LOCK_EX, LOCK_NB, LOCK_UN): Likewise. * sysdeps/unix/sysv/linux/bits/fcntl.h (LOCK_SH, LOCK_EX, LOCK_NB, LOCK_UN): Likewise. 1998-10-24 H.J. Lu <hjl@gnu.org> * libio/ioseekoff.c (_IO_seekoff): Check the valid dir value. * libio/rewind.c (rewind): Clear the error. 1998-10-24 H.J. Lu <hjl@gnu.org> * grp/grp.h (getgrent_r, getgrgid_r, getgrnam_r): Add "__" to "buffer". 1998-10-24 H.J. Lu <hjl@gnu.org> * sysdeps/unix/sysv/linux/alpha/bits/time.h (timeval): Protect with __need_timeval. * sysdeps/unix/sysv/linux/mips/bits/time.h (timeval): Likewise. * sysdeps/unix/sysv/linux/bits/time.h (timeval): Likewise. 1998-10-24 H.J. Lu <hjl@gnu.org> * signal/signal.h (timespec, siginfo_t, sigwaitinfo, sigtimedwait, sigqueue): Protect with __USE_POSIX199309. 1998-10-24 H.J. Lu <hjl@gnu.org> * time/time.h (timespec): Protect with __USE_POSIX199309 instead of __USE_POSIX. 1998-10-24 H.J. Lu <hjl@gnu.org> * libio/fileops.c (_IO_new_file_seekoff): Always resync with the kernel file offset. * libio/oldfileops.c (_IO_old_file_seekoff): Likewise.
Diffstat (limited to 'libio/fileops.c')
| -rw-r--r-- | libio/fileops.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/libio/fileops.c b/libio/fileops.c index be65d42fb2..8930f6f3cd 100644 --- a/libio/fileops.c +++ b/libio/fileops.c @@ -567,7 +567,7 @@ _IO_new_file_seekoff (fp, offset, dir, mode) _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base); { _IO_mask_flags (fp, 0, _IO_EOF_SEEN); - return offset; + goto resync; } } #ifdef TODO @@ -579,7 +579,7 @@ _IO_new_file_seekoff (fp, offset, dir, mode) if (ignore (to_skip) != to_skip) goto dumb; _IO_mask_flags (fp, 0, _IO_EOF_SEEN); - return offset; + goto resync; } #endif } @@ -590,7 +590,7 @@ _IO_new_file_seekoff (fp, offset, dir, mode) _IO_switch_to_backup_area (fp); gbump (fp->_IO_read_end + rel_offset - fp->_IO_read_ptr); _IO_mask_flags (fp, 0, _IO_EOF_SEEN); - return offset; + goto resync; } #endif } @@ -646,6 +646,16 @@ _IO_new_file_seekoff (fp, offset, dir, mode) _IO_setp (fp, fp->_IO_buf_base, fp->_IO_buf_base); } return result; + +resync: + /* We need to do it since it is possible that the file offset in + the kernel may be changed behind our back. It may happen when + we fopen a file and then do a fork. One process may access the + the file and the kernel file offset will be changed. */ + if (fp->_offset >= 0) + _IO_SYSSEEK (fp, fp->_offset, 0); + + return offset; } _IO_ssize_t |