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author | peter <peter@FreeBSD.org> | 2007-07-04 23:27:38 +0000 |
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committer | peter <peter@FreeBSD.org> | 2007-07-04 23:27:38 +0000 |
commit | 1c8d4bbe1849bcdcc2f85e7f4f049e8077209ac5 (patch) | |
tree | c6557e22092cc28b77304e9185ac106ae162a5ca /lib/libc/sys/truncate.c | |
parent | 6f011a901238459d7c02187fc3effe7157c3aeb7 (diff) | |
download | FreeBSD-src-1c8d4bbe1849bcdcc2f85e7f4f049e8077209ac5.zip FreeBSD-src-1c8d4bbe1849bcdcc2f85e7f4f049e8077209ac5.tar.gz |
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)
Diffstat (limited to 'lib/libc/sys/truncate.c')
-rw-r--r-- | lib/libc/sys/truncate.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/libc/sys/truncate.c b/lib/libc/sys/truncate.c index e26f3f5..375c9d9 100644 --- a/lib/libc/sys/truncate.c +++ b/lib/libc/sys/truncate.c @@ -35,8 +35,8 @@ __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 @@ -48,5 +48,8 @@ truncate(path, length) off_t length; { - return(__syscall((quad_t)SYS_truncate, path, 0, length)); + if (__getosreldate() >= 700051) + return(__sys_truncate(path, length)); + else + return(__sys_freebsd6_truncate(path, 0, length)); } |