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| author | Florian Weimer <fweimer@redhat.com> | 2020-04-27 11:38:28 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2020-04-27 11:38:28 +0200 |
| commit | 6771af1123d55e08450ccf4553dd0d674b7f099b (patch) | |
| tree | d77b76d4669163877cecf1dcc1cbd8e759973c28 | |
| parent | b3cae39dcbfa2432b3f3aa28854d8ac57f0de1b8 (diff) | |
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manual: Document the fexecve function
| -rw-r--r-- | manual/process.texi | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/manual/process.texi b/manual/process.texi index 5728bde2cb..b20ad26cbf 100644 --- a/manual/process.texi +++ b/manual/process.texi @@ -405,6 +405,19 @@ be an array of strings in the same format as for the @code{environ} variable; see @ref{Environment Access}. @end deftypefun +@deftypefun int fexecve (int @var{fd}, char *const @var{argv}@t{[]}, char *const @var{env}@t{[]}) +@standards{POSIX.1, unistd.h} +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}} +This is similar to @code{execve}, but instead identifying the progam +executable by its pathname, the file descriptor @var{fd} is used. The +descriptor must have been opened with the @code{O_RDONLY} flag or (on +Linux) the @code{O_PATH} flag. + +On Linux, @code{fexecve} can fail with an error of @code{ENOSYS} if +@file{/proc} has not been mounted and the kernel lacks support for the +underlying @code{execveat} system call. +@end deftypefun + @deftypefun int execle (const char *@var{filename}, const char *@var{arg0}, @dots{}, char *const @var{env}@t{[]}) @standards{POSIX.1, unistd.h} @safety{@prelim{}@mtsafe{}@asunsafe{@ascuheap{}}@acunsafe{@acsmem{}}} |