syscall — indirect system call
#define _GNU_SOURCE /* or _BSD_SOURCE or _SVID_SOURCE */ #include <unistd.h> #include <sys/syscall.h> /* For SYS_xxx definitions */
int syscall( |
int number, |
...) ; |
syscall
() performs the
system call whose assembly language interface has the
specified number
with
the specified arguments. Symbolic constants for system calls
can be found in the header file <
sys/syscall.h
>
The return value is defined by the system call being
invoked. In general, a 0 return value indicates success. A
−1 return value indicates an error, and an error code
is stored in errno
.
#define _GNU_SOURCE #include <unistd.h> #include <sys/syscall.h> #include <sys/types.h> int main(int argc, char *argv[]) { pid_t tid; tid = syscall(SYS_gettid); }
This page is part of release 3.24 of the Linux man-pages
project. A
description of the project, and information about reporting
bugs, can be found at
http://www.kernel.org/doc/man-pages/.
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