about summary refs log tree commit diff
path: root/src/fcntl/open.c
Commit message (Collapse)AuthorAgeFilesLines
* fix failure of open to read variadic mode argument for O_TMPFILERich Felker2014-10-301-1/+1
|
* avoid invalid use of va_arg in openRich Felker2014-06-061-5/+8
| | | | | | reading the variadic mode argument is only valid when the O_CREAT flag is present. this probably does not matter, but is needed for formal correctness, and could affect LTO or other full-program analysis.
* add O_CLOEXEC fallback for open and related functionsRich Felker2014-06-061-1/+6
| | | | | | | since there is no easy way to detect whether open honored or ignored the O_CLOEXEC flag, the optimal solution to providing a fallback is simply to make the fcntl syscall to set the close-on-exec flag immediately after open returns.
* support kernels with no SYS_open syscall, only SYS_openatRich Felker2014-05-241-1/+1
| | | | | | | | | | open is handled specially because it is used from so many places, in so many variants (2 or 3 arguments, setting errno or not, and cancellable or not). trying to do it as a function would not only increase bloat, but would also risk subtle breakage. this is the first step towards supporting "new" archs where linux lacks "old" syscalls.
* include cleanups: remove unused headers and add feature test macrosSzabolcs Nagy2013-12-121-1/+0
|
* overhaul pthread cancellationRich Felker2011-04-171-5/+1
| | | | | | | | | | | | | | | | | | | | | | this patch improves the correctness, simplicity, and size of cancellation-related code. modulo any small errors, it should now be completely conformant, safe, and resource-leak free. the notion of entering and exiting cancellation-point context has been completely eliminated and replaced with alternative syscall assembly code for cancellable syscalls. the assembly is responsible for setting up execution context information (stack pointer and address of the syscall instruction) which the cancellation signal handler can use to determine whether the interrupted code was in a cancellable state. these changes eliminate race conditions in the previous generation of cancellation handling code (whereby a cancellation request received just prior to the syscall would not be processed, leaving the syscall to block, potentially indefinitely), and remedy an issue where non-cancellable syscalls made from signal handlers became cancellable if the signal handler interrupted a cancellation point. x86_64 asm is untested and may need a second try to get it right.
* global cleanup to use the new syscall interfaceRich Felker2011-03-201-1/+1
|
* initial check-in, version 0.5.0 v0.5.0Rich Felker2011-02-121-0/+21