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getexecname(3c)

getexecname(3C)          Standard C Library Functions          getexecname(3C)

NAME
       getexecname - return pathname of executable

SYNOPSIS
       #include <stdlib.h>

       const char *getexecname(void);

DESCRIPTION
       The  getexecname() function returns the pathname (the first argument of
       one of the exec family of functions; see  exec(2))  of  the  executable
       that started the process.


       Normally  this is an absolute pathname, as the majority of commands are
       executed by the shells that append the command name to the user's  PATH
       components.  If  this is not an absolute path, the output of getcwd(3C)
       can be prepended to it to create an absolute path, unless  the  process
       or one of its ancestors has changed its root directory or current work‐
       ing  directory since the last successful call to one of the exec family
       of functions.

RETURN VALUES
       If successful, getexecname() returns a pointer to the executables path‐
       name; otherwise, it returns 0.

USAGE
       The getexecname() function obtains the  executable  pathname  from  the
       AT_SUN_EXECNAME aux vector. These vectors are made available to dynami‐
       cally linked processes only.


       A  successful  call  to one of the exec family of functions will always
       have AT_SUN_EXECNAME in the aux  vector.  The  associated  pathname  is
       guaranteed  to  be  less  than  or  equal to PATH_MAX, not counting the
       trailing null byte that is always present.

ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:

       tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE  TYPEAT‐
       TRIBUTE VALUE _ MT-LevelSafe


SEE ALSO
       exec(2), getcwd(3C), attributes(7)

Oracle Solaris 11.4               17 Dec 1997                  getexecname(3C)
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