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* Next stage of stdio cleanup: Retire __sFILEX and merge the fields back intoJohn Baldwin2008-04-171-2/+2
| | | | | | | | | | | | | | | | | | | | | | __sFILE. This was supposed to be done in 6.0. Some notes: - Where possible I restored the various lines to their pre-__sFILEX state. - Retire INITEXTRA() and just initialize the wchar bits (orientation and mbstate) explicitly instead. The various places that used INITEXTRA didn't need the locking fields or _up initialized. (Some places needed _up to exist and not be off the end of a NULL or garbage pointer, but they didn't require it to be initialized to a specific value.) - For now, stdio.h "knows" that pthread_t is a 'struct pthread *' to avoid namespace pollution of including all the pthread types in stdio.h. Once we remove all the inlines and make __sFILE private it can go back to using pthread_t, etc. - This does not remove any of the inlines currently and does not change any of the public ABI of 'FILE'. MFC after: 1 month Reviewed by: peter Notes: svn path=/head/; revision=178287
* Add <limits.h> for SHRT_MAX.John Baldwin2008-02-271-0/+1
| | | | | | | Pointy hat to: jhb Notes: svn path=/head/; revision=176629
* File descriptors are an int, but our stdio FILE object uses a short to holdJohn Baldwin2008-02-271-0/+14
| | | | | | | | | | | | | | | | | | | | them. Thus, any fd whose value is greater than SHRT_MAX is handled incorrectly (the short value is sign-extended when converted to an int). An unpleasant side effect is that if fopen() opens a file and gets a backing fd that is greater than SHRT_MAX, fclose() will fail and the file descriptor will be leaked. Better handle this by fixing fopen(), fdopen(), and freopen() to fail attempts to use a fd greater than SHRT_MAX with EMFILE. At some point in the future we should look at expanding the file descriptor in FILE to an int, but that is a bit complicated due to ABI issues. MFC after: 1 week Discussed on: arch Reviewed by: wollman Notes: svn path=/head/; revision=176628
* Per Regents of the University of Calfornia letter, remove advertisingWarner Losh2007-01-091-4/+0
| | | | | | | | | clause. # If I've done so improperly on a file, please let me know. Notes: svn path=/head/; revision=165903
* file == NULL:Andrey A. Chernov2006-10-161-9/+14
| | | | | | | | | | | | | | | | Issue __sflush() before possible setting O_APPEND mode or ftruncate(), write to wrong place may occurse oserwise. Use simplified _sseek() to the start, if no O_APPEND is set, instead of _fseeko() (_sseek() to the end, if O_APPEND, occurse later, as for file != NULL). Don't check seek error return, as original fopen() and freopen() never does. file != NULL: Add missing _sseek() to the end. Notes: svn path=/head/; revision=163430
* Honor errno obtained from __sflagsAndrey A. Chernov2006-10-161-1/+3
| | | | | | | Move errno restoring after FUNLOCKFILE in one case Notes: svn path=/head/; revision=163406
* Back out ftruncate error handling. There can some file tipesAndrey A. Chernov2006-10-161-9/+2
| | | | | | | f.e. sockets when ftruncate normally fail. Notes: svn path=/head/; revision=163405
* Do real seekAndrey A. Chernov2006-10-151-3/+11
| | | | | | | | | | Catch ftruncate errors PR: 104295 Submitted by: ru (seek) Notes: svn path=/head/; revision=163385
* Associate a multibyte conversion state object with each stream. Reset itTim J. Robbins2004-05-221-0/+1
| | | | | | | | | | | | to the initial state when a stream is opened or seeked upon. Use the stream's conversion state object instead of a freshly-zeroed one in fgetwc(), fputwc() and ungetwc(). This is only a performance improvement for now, but it would also be required in order to support state-dependent encodings. Notes: svn path=/head/; revision=129583
* Remove part of my stateful locale patch that slipped into the previous rev.Tim J. Robbins2003-01-261-3/+0
| | | | Notes: svn path=/head/; revision=109880
* Initial implementation of the C99 feature whereby calling freopen() withTim J. Robbins2003-01-261-1/+58
| | | | | | | | | | | | | a NULL filename argument allows a stream's mode to be changed. At the moment it just recycles the old file descriptor instead of storing the filename somewhere and using that to reopen the file, as the standard seems to require. Strictly conforming C99 applications probably can't tell the difference but POSIX ones can. PR: 46791 Notes: svn path=/head/; revision=109871
* Reset the stream orientation to 0 (unoriented) in freopen(), as requiredTim J. Robbins2003-01-031-0/+1
| | | | | | | by the C standard. Notes: svn path=/head/; revision=108598
* Add restrict type-qualifier.Mike Barcroft2002-10-121-1/+2
| | | | Notes: svn path=/head/; revision=104989
* Fix the style of the SCM ID's.David E. O'Brien2002-03-221-4/+2
| | | | | | | I believe have made all of libc .c's as consistent as possible. Notes: svn path=/head/; revision=92986
* libc MT-safety, part 2.Daniel Eischen2001-02-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a lock to FILE. flockfile and friends are now implemented (for the most part) in libc. flockfile_debug is implemented in libc_r; I suppose it's about time to kill it but will do it in a future commit. Fix a potential deadlock in _fwalk in a threaded environment. A file flag (__SIGN) was added to stdio.h that, when set, tells _fwalk to ignore it in its walk. This seemed to be needed in refill.c because each file needs to be locked when flushing. Add a stub for pthread_self in libc. This is needed by flockfile which is allowed by POSIX to be recursive. Make fgetpos() error return value (-1) match man page. Remove recursive calls to locked functions (stdio); I think I've got them all, but I may have missed a couple. A few K&R -> ANSI conversions along with removal of a few instances of "register". $Id$ -> $FreeBSD$ in libc/stdio/rget.c Not objected to: -arch, a few months ago Notes: svn path=/head/; revision=72373
* Remove _THREAD_SAFE and make libc thread-safe by default byDaniel Eischen2001-01-241-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | adding (weak definitions to) stubs for some of the pthread functions. If the threads library is linked in, the real pthread functions will pulled in. Use the following convention for system calls wrapped by the threads library: __sys_foo - actual system call _foo - weak definition to __sys_foo foo - weak definition to __sys_foo Change all libc uses of system calls wrapped by the threads library from foo to _foo. In order to define the prototypes for _foo(), we introduce namespace.h and un-namespace.h (suggested by bde). All files that need to reference these system calls, should include namespace.h before any standard includes, then include un-namespace.h after the standard includes and before any local includes. <db.h> is an exception and shouldn't be included in between namespace.h and un-namespace.h namespace.h will define foo to _foo, and un-namespace.h will undefine foo. Try to eliminate some of the recursive calls to MT-safe functions in libc/stdio in preparation for adding a mutex to FILE. We have recursive mutexes, but would like to avoid using them if possible. Remove uneeded includes of <errno.h> from a few files. Add $FreeBSD$ to a few files in order to pass commitprep. Approved by: -arch Notes: svn path=/head/; revision=71579
* Simplify sytem call renaming. Instead of _foo() <-- _libc_foo <-- foo(),Jason Evans2000-01-271-3/+3
| | | | | | | | | | | | | | | | | | | | just use _foo() <-- foo(). In the case of a libpthread that doesn't do call conversion (such as linuxthreads and our upcoming libpthread), this is adequate. In the case of libc_r, we still need three names, which are now _thread_sys_foo() <-- _foo() <-- foo(). Convert all internal libc usage of: aio_suspend(), close(), fsync(), msync(), nanosleep(), open(), fcntl(), read(), and write() to _foo() instead of foo(). Remove all internal libc usage of: creat(), pause(), sleep(), system(), tcdrain(), wait(), and waitpid(). Make thread cancellation fully POSIX-compliant. Suggested by: deischen Notes: svn path=/head/; revision=56698
* Add three-tier symbol naming in support of POSIX thread cancellationJason Evans2000-01-121-3/+3
| | | | | | | | | points. For library functions, the pattern is __sleep() <-- _libc_sleep() <-- sleep(). The arrows represent weak aliases. For system calls, the pattern is _read() <-- _libc_read() <-- read(). Notes: svn path=/head/; revision=55837
* Add (FILE *) locking.Dmitrij Tejblum1999-11-201-0/+9
| | | | Notes: svn path=/head/; revision=53460
* Remove trailing whitespace.Rodney W. Grimes1995-05-301-2/+2
| | | | Notes: svn path=/head/; revision=8870
* BSD 4.4 Lite Lib SourcesRodney W. Grimes1994-05-271-0/+155
Notes: svn path=/cvs2svn/branches/unlabeled-1.1.1/; revision=1573
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