GETSID

Section: Linux Programmer's Manual (2)
Updated: 1996-04-11
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getsid - get session ID

#include <unistd.h>

pid_t getsid(pid_t pid);

getsid(0) returns the session ID of the calling process. getsid(p) returns the session ID of the process with process ID p.

On error, -1 will be returned. The only error which can happen is ESRCH, when no process with process ID p was found.

SVr4, which documents an additional EPERM error condition.

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