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getsid (2)
  • getsid (2) ( Solaris man: Системные вызовы )
  • getsid (2) ( FreeBSD man: Системные вызовы )
  • getsid (2) ( Русские man: Системные вызовы )
  • >> getsid (2) ( Linux man: Системные вызовы )
  • getsid (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    getsid - get session ID
     
    

    SYNOPSIS

    #include <unistd.h>

    pid_t getsid(pid_t pid);

    Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

    getsid(): _XOPEN_SOURCE >= 500  

    DESCRIPTION

    getsid(0) returns the session ID of the calling process. getsid(p) returns the session ID of the process with process ID p. (The session ID of a process is the process group ID of the session leader.)  

    RETURN VALUE

    On success, a session ID is returned. On error, (pid_t) -1 will be returned, and errno is set appropriately.  

    ERRORS

    EPERM
    A process with process ID p exists, but it is not in the same session as the calling process, and the implementation considers this an error.
    ESRCH
    No process with process ID p was found.
     

    CONFORMING TO

    SVr4, POSIX.1-2001.  

    NOTES

    Linux does not return EPERM.

    Linux has this system call since Linux 1.3.44. There is libc support since libc 5.2.19.  

    SEE ALSO

    getpgid(2), setsid(2), credentials(7)  

    COLOPHON

    This page is part of release 3.14 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/.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    ERRORS
    CONFORMING TO
    NOTES
    SEE ALSO
    COLOPHON


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