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FEXECVE(3)                 Linux Programmer's Manual                FEXECVE(3)

NAME
       fexecve - execute program specified via file descriptor
SYNOPSIS
       #include <unistd.h>
       int fexecve(int fd, char *const argv[], char *const envp[]);
   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
       fexecve():
           Since glibc 2.10:
               _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
           Before glibc 2.10:
               _GNU_SOURCE
DESCRIPTION
       fexecve() performs the same task as execve(2), with the difference that
       the file to be executed is specified via a file descriptor, fd,  rather
       than  via a pathname.  The file descriptor fd must be opened read-only,
       and the caller must have permission to execute the file that it  refers
       to.
RETURN VALUE
       A  successful  call to fexecve() never returns.  On error, the function
       returns, with a result value of -1, and errno is set appropriately.
ERRORS
       Errors are as for execve(2), with the following additions:
       EINVAL fd is not a valid file descriptor, or argv is NULL, or  envp  is
              NULL.
       ENOSYS The /proc file system could not be accessed.
VERSIONS
       fexecve() is implemented since glibc 2.3.2.
CONFORMING TO
       POSIX.1-2008.   This  function is not specified in POSIX.1-2001, and is
       not widely available on other systems.
NOTES
       On Linux, fexecve() is implemented using the proc(5)  file  system,  so
       /proc needs to be mounted and available at the time of the call.
SEE ALSO
       execve(2)
COLOPHON
       This  page  is  part of release 3.53 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/.

Linux                             2010-09-15                        FEXECVE(3)