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tools/nolibc: unistd.h: apply __sysret() helper

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Use __sysret() to shrink the whole _syscall() to oneline code.

Reviewed-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Zhangjin Wu <falcon@tinylab.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
This commit is contained in:
Zhangjin Wu 2023-06-28 21:11:44 +08:00 committed by Willy Tarreau
parent 428905da6e
commit c8d54fa37c
1 changed files with 1 additions and 10 deletions
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11
tools/include/nolibc/unistd.h
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@ -56,16 +56,7 @@ int tcsetpgrp(int fd, pid_t pid)
return ioctl(fd, TIOCSPGRP, &pid); return ioctl(fd, TIOCSPGRP, &pid);
} }
#define _syscall(N, ...) \ #define _syscall(N, ...) __sysret(my_syscall##N(__VA_ARGS__))
({ \
long _ret = my_syscall##N(__VA_ARGS__); \
if (_ret < 0) { \
SET_ERRNO(-_ret); \
_ret = -1; \
} \
_ret; \
})
#define _syscall_narg(...) __syscall_narg(__VA_ARGS__, 6, 5, 4, 3, 2, 1, 0) #define _syscall_narg(...) __syscall_narg(__VA_ARGS__, 6, 5, 4, 3, 2, 1, 0)
#define __syscall_narg(_0, _1, _2, _3, _4, _5, _6, N, ...) N #define __syscall_narg(_0, _1, _2, _3, _4, _5, _6, N, ...) N
#define _syscall_n(N, ...) _syscall(N, __VA_ARGS__) #define _syscall_n(N, ...) _syscall(N, __VA_ARGS__)