fexecve(3)

1FEXECVE(3)                 Linux Programmer's Manual                FEXECVE(3)
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NAME

6       fexecve - execute program specified via file descriptor
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SYNOPSIS

9       #include <unistd.h>
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11       int fexecve(int fd, char *const argv[], char *const envp[]);
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13   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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15       fexecve():
16           Since glibc 2.10:
17               _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
18           Before glibc 2.10:
19               _GNU_SOURCE
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DESCRIPTION

22       fexecve() performs the same task as execve(2), with the difference that
23       the file to be executed is specified via a file descriptor, fd,  rather
24       than  via a pathname.  The file descriptor fd must be opened read-only,
25       and the caller must have permission to execute the file that it  refers
26       to.
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RETURN VALUE

29       A  successful  call to fexecve() never returns.  On error, the function
30       returns, with a result value of -1, and errno is set appropriately.
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ERRORS

33       Errors are as for execve(2), with the following additions:
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35       EINVAL fd is not a valid file descriptor, or argv is NULL, or  envp  is
36              NULL.
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38       ENOSYS The /proc file system could not be accessed.
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VERSIONS

41       fexecve() is implemented since glibc 2.3.2.
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CONFORMING TO

44       POSIX.1-2008.   This  function is not specified in POSIX.1-2001, and is
45       not widely available on other systems.
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NOTES

48       On Linux, fexecve() is implemented using the proc(5)  file  system,  so
49       /proc needs to be mounted and available at the time of the call.
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COLOPHON

55       This  page  is  part of release 3.53 of the Linux man-pages project.  A
56       description of the project, and information about reporting  bugs,  can
57       be found at http://www.kernel.org/doc/man-pages/.
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61Linux                             2010-09-15                        FEXECVE(3)