add O_PATH/O_SEARCH support to fcntl.h

I'm not 100% sure that Linux's O_PATH meets the POSIX requirements for
O_SEARCH, but it seems very close if not perfect. and old kernels
ignore it, so O_SEARCH will still work as desired as long as the
caller has read permissions to the directory.
This commit is contained in:
Rich Felker
2012-09-13 20:56:25 -04:00
parent cfc09b1ecf
commit b238b37a0f
5 changed files with 9 additions and 1 deletions

View File

@ -37,7 +37,7 @@ int openat(int, const char *, int, ...);
int posix_fadvise(int, off_t, off_t, int);
int posix_fallocate(int, off_t, off_t);
#define O_ACCMODE 03
#define O_ACCMODE (O_RDWR|O_SEARCH)
#define O_RDONLY 00
#define O_WRONLY 01
#define O_RDWR 02