getuid()

Get the user ID

Synopsis:

#include <sys/types.h>
#include <unistd.h>

uid_t getuid( void );

Library:

libc

Description:

The getuid() function gets the user ID for the calling process.

Returns:

The user ID for the calling process.

Examples:

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>

int main( void )
  {
    printf( "My userid is %d\n", getuid() );
    return EXIT_SUCCESS;
  }

Classification:

POSIX 1003.1

Safety:
Cancellation point	No
Interrupt handler	No
Signal handler	Yes
Thread	Yes