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by Francesco Paolo Lovergine
rules: linking manpages-posix not manpages. |
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.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved |
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by Francesco Paolo Lovergine
* Alligned to linux main manpages edition. |
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.TH "GETSID" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual" |
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by Francesco Paolo Lovergine
rules: linking manpages-posix not manpages. |
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.\" getsid |
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.SH NAME |
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getsid \- get the process group ID of a session leader
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.SH SYNOPSIS |
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.LP
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\fB#include <unistd.h>
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.br
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.sp
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pid_t getsid(pid_t\fP \fIpid\fP\fB); \fP |
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\fB
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.br
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\fP
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.SH DESCRIPTION |
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.LP
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The \fIgetsid\fP() function shall obtain the process group ID of the |
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process that is the session leader of the process |
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specified by \fIpid\fP. If \fIpid\fP is (\fBpid_t\fP)0, it specifies |
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the calling process. |
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.SH RETURN VALUE |
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.LP
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Upon successful completion, \fIgetsid\fP() shall return the process |
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group ID of the session leader of the specified process. |
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Otherwise, it shall return (\fBpid_t\fP)-1 and set \fIerrno\fP to |
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indicate the error. |
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.SH ERRORS |
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.LP
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The \fIgetsid\fP() function shall fail if: |
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.TP 7 |
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.B EPERM |
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The process specified by \fIpid\fP is not in the same session as the |
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calling process, and the implementation does not allow |
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access to the process group ID of the session leader of that process |
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from the calling process. |
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.TP 7 |
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.B ESRCH |
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There is no process with a process ID equal to \fIpid\fP. |
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.sp
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.LP
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\fIThe following sections are informative.\fP |
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.SH EXAMPLES |
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.LP
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None. |
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.SH APPLICATION USAGE |
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.LP
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None. |
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.SH RATIONALE |
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.LP
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None. |
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.SH FUTURE DIRECTIONS |
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.LP
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None. |
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.SH SEE ALSO |
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.LP
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\fIexec\fP() , \fIfork\fP() , \fIgetpid\fP() , \fIgetpgid\fP() , \fIsetpgid\fP() |
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, \fIsetsid\fP() , the Base Definitions volume of IEEE\ Std\ 1003.1-2001, |
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\fI<unistd.h>\fP |
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.SH COPYRIGHT |
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Portions of this text are reprinted and reproduced in electronic form |
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from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology |
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-- Portable Operating System Interface (POSIX), The Open Group Base |
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Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of |
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Electrical and Electronics Engineers, Inc and The Open Group. In the |
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event of any discrepancy between this version and the original IEEE and |
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The Open Group Standard, the original IEEE and The Open Group Standard |
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is the referee document. The original Standard can be obtained online at |
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http://www.opengroup.org/unix/online.html . |