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path: root/src/stdio/__stdio_seek.c
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2011-04-02don't disable seeking after first seek failureRich Felker1-8/+0
this could cause problems if the application uses dup2(fd,fileno(f)) to redirect, and the old fd was not seekable but the new fd is.
2011-03-28major stdio overhaul, using readv/writev, plus other changesRich Felker1-2/+2
the biggest change in this commit is that stdio now uses readv to fill the caller's buffer and the FILE buffer with a single syscall, and likewise writev to flush the FILE buffer and write out the caller's buffer in a single syscall. making this change required fundamental architectural changes to stdio, so i also made a number of other improvements in the process: - the implementation no longer assumes that further io will fail following errors, and no longer blocks io when the error flag is set (though the latter could easily be changed back if desired) - unbuffered mode is no longer implemented as a one-byte buffer. as a consequence, scanf unreading has to use ungetc, to the unget buffer has been enlarged to hold at least 2 wide characters. - the FILE structure has been rearranged to maintain the locations of the fields that might be used in glibc getc/putc type macros, while shrinking the structure to save some space. - error cases for fflush, fseek, etc. should be more correct. - library-internal macros are used for getc_unlocked and putc_unlocked now, eliminating some ugly code duplication. __uflow and __overflow are no longer used anywhere but these macros. switch to read or write mode is also separated so the code can be better shared, e.g. with ungetc. - lots of other small things.
2011-03-20global cleanup to use the new syscall interfaceRich Felker1-3/+3
2011-02-13cleaning up syscalls in preparation for x86_64 portRich Felker1-1/+7
- hide all the legacy xxxxxx32 name cruft in syscall.h so the actual source files can be clean and uniform across all archs. - cleanup llseek/lseek and mmap2/mmap handling for 32/64 bit systems - alternate implementation for nice if the target lacks nice syscall
2011-02-12initial check-in, version 0.5.0v0.5.0Rich Felker1-0/+15