diff options
| author | Denys Vlasenko <vda.linux@googlemail.com> | 2010-02-02 23:07:24 +0100 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2010-02-02 23:07:24 +0100 |
| commit | 779c35b7c4e47d9fc8f69ee582e822a2f6f45411 (patch) | |
| tree | a28b743c3e26d002cacebc15fa0c16759b9d163c /libc | |
| parent | 7fdca78a993ef53f6c26bb19a70862557dc794e8 (diff) | |
time,times: stop interpreting negative return values ar errors
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libc')
| -rw-r--r-- | libc/sysdeps/linux/common/bits/syscalls-common.h | 17 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/time.c | 13 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/times.c | 2 |
3 files changed, 24 insertions, 8 deletions
diff --git a/libc/sysdeps/linux/common/bits/syscalls-common.h b/libc/sysdeps/linux/common/bits/syscalls-common.h index 78bbf6c22..5e4e350c5 100644 --- a/libc/sysdeps/linux/common/bits/syscalls-common.h +++ b/libc/sysdeps/linux/common/bits/syscalls-common.h @@ -33,6 +33,9 @@ #ifndef INLINE_SYSCALL # define INLINE_SYSCALL(name, nr, args...) INLINE_SYSCALL_NCS(__NR_##name, nr, args) #endif +#ifndef INLINE_SYSCALL_NOERR +# define INLINE_SYSCALL_NOERR(name, nr, args...) INLINE_SYSCALL_NOERR_NCS(__NR_##name, nr, args) +#endif /* Just like INLINE_SYSCALL(), but take a non-constant syscall (NCS) argument */ #ifndef INLINE_SYSCALL_NCS @@ -47,6 +50,14 @@ __res; \ }) #endif +#ifndef INLINE_SYSCALL_NOERR_NCS +# define INLINE_SYSCALL_NOERR_NCS(name, nr, args...) \ +({ \ + INTERNAL_SYSCALL_DECL(__err); \ + long __res = INTERNAL_SYSCALL_NCS(name, __err, nr, args); \ + __res; \ +}) +#endif /* No point in forcing people to implement both when they only need one */ #ifndef INTERNAL_SYSCALL @@ -80,8 +91,14 @@ type name(C_DECL_ARGS_##nargs(args)) { \ return (type)INLINE_SYSCALL(name, nargs, C_ARGS_##nargs(args)); \ } +#define SYSCALL_NOERR_FUNC(nargs, type, name, args...) \ +type name(C_DECL_ARGS_##nargs(args)) { \ + return (type)INLINE_SYSCALL_NOERR(name, nargs, C_ARGS_##nargs(args)); \ +} + #define _syscall0(args...) SYSCALL_FUNC(0, args) #define _syscall1(args...) SYSCALL_FUNC(1, args) +#define _syscall_noerr1(args...) SYSCALL_NOERR_FUNC(1, args) #define _syscall2(args...) SYSCALL_FUNC(2, args) #define _syscall3(args...) SYSCALL_FUNC(3, args) #define _syscall4(args...) SYSCALL_FUNC(4, args) diff --git a/libc/sysdeps/linux/common/time.c b/libc/sysdeps/linux/common/time.c index 0d9e412bf..e13b44f4d 100644 --- a/libc/sysdeps/linux/common/time.c +++ b/libc/sysdeps/linux/common/time.c @@ -13,19 +13,18 @@ #ifdef __NR_time -_syscall1(time_t, time, time_t *, t) +_syscall_noerr1(time_t, time, time_t *, t) #else - time_t time(time_t * t) { time_t result; struct timeval tv; - if (gettimeofday(&tv, (struct timezone *) NULL)) { - result = (time_t) - 1; - } else { - result = (time_t) tv.tv_sec; - } + /* In Linux, gettimeofday fails only on bad parameter. + * We know that here parameter isn't bad. + */ + gettimeofday(&tv, NULL); + result = (time_t) tv.tv_sec; if (t != NULL) { *t = result; } diff --git a/libc/sysdeps/linux/common/times.c b/libc/sysdeps/linux/common/times.c index e71d1bd71..37ae040d4 100644 --- a/libc/sysdeps/linux/common/times.c +++ b/libc/sysdeps/linux/common/times.c @@ -11,5 +11,5 @@ #include <sys/times.h> -_syscall1(clock_t, times, struct tms *, buf) +_syscall_noerr1(clock_t, times, struct tms *, buf) libc_hidden_def(times) |