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* Re-arrange my funopen(3) fix to minimize differences with original stdio code,ache2001-09-031-0/+2
| | | | | | no functional changes. Add fp->_offset optimization in _SAPP+_SOPT case
* Move all stdio internal flags processing and setting out of __sread(),ache2001-09-021-0/+1
| | | | | | | | | | __swrite() and __sseek() to higher level. According to funopen(3) they all are just wrappers to something like standard read(2), write(2) and lseek(2), i.e. must not touch stdio internals because they are replaceable with any other functions knows nothing about stdio internals. See example of funopen(3) usage in sendmail sources f.e. NOTE: this is original stdio bug, not result of my range checkin added.
* Back out disabling ungetc() at 0, use different solution:ache2001-09-011-2/+2
| | | | | keep negative offset internally, but return 0 externally in ftell*() I.e. use 0 now as 'unspecified value' per POSIX ungetc() description.
* The same big piece of ftell code repeated in 3 places. Simplify things movingache2001-08-311-0/+1
| | | | | it into one subfunction instead. Try to use real offset in strange cases.
* fseek.c:ache2001-08-171-1/+1
| | | | | | | | | | | | Resulting fseek() offset must fit in long, required by POSIX (pointed by bde), so add LONG_MAX and final tests for it. rewind.c: 1) add missing __sinit() as in fseek() it pretends to be. 2) use clearerr_unlocked() since we already lock stream before _fseeko() 3) don't zero errno at the end, it explicitely required by POSIX as the only one method to test rewind() error condition. 4) don't clearerr() if error happens in _fseeko()
* (cantwrite): do not allocate memory for a NULL stringassar2001-06-181-1/+2
| | | | | | | | PR: misc/26044 MFC after: 1 week Submitted by: bde
* Properly initialize a temporary FILE that is allocated off the stack.deischen2001-06-041-0/+7
| | | | | | | The change to reuse _up from FILE (to allow FILE to grow without changing size) overlooked FILE being allocated off the stack. Approved by: sobomax
* Hide the definition of struct __sFILEX and add the neededdeischen2001-03-011-0/+10
| | | | | | | lock definitions to it. flockfile state is now allocated along with the rest of FILE. This eliminates the need for a separate allocation of flockfile state as well as eliminating the mutex/lock used to serialize its allocation.
* Remove _THREAD_SAFE and make libc thread-safe by default bydeischen2001-01-241-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* Import CSRG 4.4BSD-Lite2 lib/libc onto vendor branchpeter1997-03-111-17/+17
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* BSD 4.4 Lite Lib Sourcesrgrimes1994-05-271-0/+87
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