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fexecve(3) [linux man page]

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 3.27 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)

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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)
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