diff options
| author | Peter Wemm <peter@FreeBSD.org> | 2007-07-04 23:27:38 +0000 |
|---|---|---|
| committer | Peter Wemm <peter@FreeBSD.org> | 2007-07-04 23:27:38 +0000 |
| commit | 4dd719bd7f6491cea2f15846bf5ebcfd3d5e862f (patch) | |
| tree | c6557e22092cc28b77304e9185ac106ae162a5ca /lib/libc/sys/lseek.c | |
| parent | 65a6d893baa4ff43995d874bdaf3119266533e84 (diff) | |
| download | src-4dd719bd7f6491cea2f15846bf5ebcfd3d5e862f.tar.gz src-4dd719bd7f6491cea2f15846bf5ebcfd3d5e862f.zip | |
Change the C wrappers for mmap/lseek/pread/pwrite/truncate/ftruncate to
call the pad-less versions of the corresponding syscalls if the running
kernel supports it. Check kern.osreldate once per program and cache the
result to select the appropriate syscall. This maintains userland
compatability with kernel.old's from quite a while back.
Approved by: re (kensmith)
Notes
Notes:
svn path=/head/; revision=171219
Diffstat (limited to 'lib/libc/sys/lseek.c')
| -rw-r--r-- | lib/libc/sys/lseek.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/libc/sys/lseek.c b/lib/libc/sys/lseek.c index 86136785f053..a086be18e537 100644 --- a/lib/libc/sys/lseek.c +++ b/lib/libc/sys/lseek.c @@ -36,6 +36,7 @@ __FBSDID("$FreeBSD$"); #include <sys/types.h> #include <sys/syscall.h> #include <unistd.h> +#include "libc_private.h" /* * This function provides 64-bit offset padding that @@ -47,5 +48,9 @@ lseek(fd, offset, whence) off_t offset; int whence; { - return(__syscall((quad_t)SYS_lseek, fd, 0, offset, whence)); + + if (__getosreldate() >= 700051) + return(__sys_lseek(fd, offset, whence)); + else + return(__sys_freebsd6_lseek(fd, 0, offset, whence)); } |