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Get the effective group ID
#include <sys/types.h>
#include <unistd.h>
gid_t getegid( void );
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The getegid() function gets the effective group ID for the
calling process.
The calling process's effective group ID.
This function can't fail.
/*
* Print the effective group ID of a process
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
int main( void )
{
printf( "My effective group ID is %d\n", getegid() );
return EXIT_SUCCESS;
}
POSIX 1003.1
Safety: | |
Cancellation point |
No |
Interrupt handler |
No |
Signal handler |
Yes |
Thread |
Yes |
geteuid(),
getgid(),
getuid(),
setegid()
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