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 2.79 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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