1GETEUID(3P) POSIX Programmer's Manual GETEUID(3P)
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6 This manual page is part of the POSIX Programmer's Manual. The Linux
7 implementation of this interface may differ (consult the corresponding
8 Linux manual page for details of Linux behavior), or the interface may
9 not be implemented on Linux.
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12 geteuid - get the effective user ID
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15 #include <unistd.h>
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17 uid_t geteuid(void);
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21 The geteuid() function shall return the effective user ID of the call‐
22 ing process.
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25 The geteuid() function shall always be successful and no return value
26 is reserved to indicate an error.
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29 No errors are defined.
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31 The following sections are informative.
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34 None.
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37 None.
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40 None.
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43 None.
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46 getegid(), getgid(), getuid(), setegid(), seteuid(), setgid(),
47 setregid(), setreuid(), setuid(), the Base Definitions volume of
48 IEEE Std 1003.1-2001, <sys/types.h>, <unistd.h>
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51 Portions of this text are reprinted and reproduced in electronic form
52 from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
53 -- Portable Operating System Interface (POSIX), The Open Group Base
54 Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
55 Electrical and Electronics Engineers, Inc and The Open Group. In the
56 event of any discrepancy between this version and the original IEEE and
57 The Open Group Standard, the original IEEE and The Open Group Standard
58 is the referee document. The original Standard can be obtained online
59 at http://www.opengroup.org/unix/online.html .
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63IEEE/The Open Group 2003 GETEUID(3P)