fexecve (3)
NAME
fexecve - execute program specified via file descriptorSYNOPSIS
#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 filesystem 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) filesystem, 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 3.54 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/.