musl - musl - an implementation of the standard library for Linux-based systems

greatly improve freopen behavior

1. don't open /dev/null just as a basis to copy flags; use shared __fmodeflags function to get the right file flags for the mode. 2. handle the case (probably invalid, but whatever) case where the original stream's file descriptor was closed; previously, the logic re-closed it. 3. accept the "e" mode flag for close-on-exec; update dup3 to fallback to using dup2 so we can simply call __dup3 instead of putting fallback logic in freopen itself.

Diffstat (limited to 'src/stdio/fopen.c')

1 files changed, 1 insertions, 8 deletions