diff options
author | Rich Felker <dalias@aerifal.cx> | 2011-03-19 21:36:10 -0400 |
---|---|---|
committer | Rich Felker <dalias@aerifal.cx> | 2011-03-19 21:36:10 -0400 |
commit | 685e40bb09f5f24a2af54ea09c97328808f76990 (patch) | |
tree | 73bbf60045bb3a9c8af4f2639e8adb2ad1ea6994 /src/internal/syscall.h | |
parent | 462dbfc20788a6c9dd1ea4bb1cef086aa189615a (diff) | |
download | musl-685e40bb09f5f24a2af54ea09c97328808f76990.tar.gz musl-685e40bb09f5f24a2af54ea09c97328808f76990.tar.xz musl-685e40bb09f5f24a2af54ea09c97328808f76990.zip |
syscall overhaul part two - unify public and internal syscall interface
with this patch, the syscallN() functions are no longer needed; a variadic syscall() macro allows syscalls with anywhere from 0 to 6 arguments to be made with a single macro name. also, manually casting each non-integer argument with (long) is no longer necessary; the casts are hidden in the macros. some source files which depended on being able to define the old macro SYSCALL_RETURNS_ERRNO have been modified to directly use __syscall() instead of syscall(). references to SYSCALL_SIGSET_SIZE and SYSCALL_LL have also been changed. x86_64 has not been tested, and may need a follow-up commit to fix any minor bugs/oversights.
Diffstat (limited to 'src/internal/syscall.h')
-rw-r--r-- | src/internal/syscall.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/internal/syscall.h b/src/internal/syscall.h new file mode 100644 index 00000000..819aafe6 --- /dev/null +++ b/src/internal/syscall.h @@ -0,0 +1,32 @@ +#ifndef _SYSCALL_H +#define _SYSCALL_H + +/* This header is mostly useless leftover wrapper cruft */ + +#include <sys/syscall.h> + +#define syscall0 syscall +#define syscall1 syscall +#define syscall2 syscall +#define syscall3 syscall +#define syscall4 syscall +#define syscall5 syscall +#define syscall6 syscall + +#define socketcall __socketcall + +/* the following are needed for iso c functions to use */ +#define __syscall_open(filename, flags, mode) syscall(__NR_open, (filename), (flags)|0100000, (mode)) +#define __syscall_read(fd, buf, len) syscall(__NR_read, (fd), (buf), (len)) +#define __syscall_write(fd, buf, len) syscall(__NR_write, (fd), (buf), (len)) +#define __syscall_close(fd) syscall(__NR_close, (fd)) +#define __syscall_fcntl(fd, cmd, arg) syscall(__NR_fcntl, (fd), (cmd), (arg)) +#define __syscall_dup2(old, new) syscall(__NR_dup2, (old), (new)) +#define __syscall_unlink(path) syscall(__NR_unlink, (path)) +#define __syscall_getpid() syscall(__NR_getpid) +#define __syscall_kill(pid,sig) syscall(__NR_kill, (pid), (sig)) +#define __syscall_sigaction(sig,new,old) syscall(__NR_rt_sigaction, (sig), (new), (old), 8) +#define __syscall_ioctl(fd,ioc,arg) syscall(__NR_ioctl, (fd), (ioc), (arg)) +#define __syscall_exit(code) syscall(__NR_exit, code) + +#endif |