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6 .TH GETEXECNAME 3C "Dec 17, 1997"
8 getexecname \- return pathname of executable
14 \fBconst char *\fR\fBgetexecname\fR(\fBvoid\fR);
20 The \fBgetexecname()\fR function returns the pathname (the first argument of
21 one of the \fBexec\fR family of functions; see \fBexec\fR(2)) of the executable
22 that started the process.
25 Normally this is an absolute pathname, as the majority of commands are executed
26 by the shells that append the command name to the user's \fBPATH\fR components.
27 If this is not an absolute path, the output of \fBgetcwd\fR(3C) can be
28 prepended to it to create an absolute path, unless the process or one of its
29 ancestors has changed its root directory or current working directory since the
30 last successful call to one of the \fBexec\fR family of functions.
34 If successful, \fBgetexecname()\fR returns a pointer to the executables
35 pathname; otherwise, it returns \fB0\fR.
39 The \fBgetexecname()\fR function obtains the executable pathname from the
40 \fBAT_SUN_EXECNAME\fR aux vector. These vectors are made available to
41 dynamically linked processes only.
44 A successful call to one of the \fBexec\fR family of functions will always have
45 \fBAT_SUN_EXECNAME\fR in the aux vector. The associated pathname is guaranteed
46 to be less than or equal to \fIPATH_MAX\fR, not counting the trailing null byte
47 that is always present.
51 See \fBattributes\fR(5) for descriptions of the following attributes:
59 ATTRIBUTE TYPE ATTRIBUTE VALUE
67 \fBexec\fR(2), \fBgetcwd\fR(3C), \fBattributes\fR(5)