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author | pjd <pjd@FreeBSD.org> | 2009-07-05 20:20:09 +0000 |
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committer | pjd <pjd@FreeBSD.org> | 2009-07-05 20:20:09 +0000 |
commit | fb7ddfc9fe330aeb8562e777878ec1f6bb317a8b (patch) | |
tree | ed83e94e587ccd3e1d955e0be7ae14437ae62b4e /lib/libc | |
parent | 9f7eae50beb38e763f8614fed575eec619707621 (diff) | |
download | FreeBSD-src-fb7ddfc9fe330aeb8562e777878ec1f6bb317a8b.zip FreeBSD-src-fb7ddfc9fe330aeb8562e777878ec1f6bb317a8b.tar.gz |
- Don't suggest opening file for writing in preparation for fexecve(2).
- execve(2)/fexecve(2) won't return ETXTBSY if file is open for reading.
Approved by: re (kib)
Diffstat (limited to 'lib/libc')
-rw-r--r-- | lib/libc/sys/execve.2 | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/lib/libc/sys/execve.2 b/lib/libc/sys/execve.2 index 8cb25bc..cdd4197 100644 --- a/lib/libc/sys/execve.2 +++ b/lib/libc/sys/execve.2 @@ -220,13 +220,11 @@ Since execute permission is checked by .Fn fexecve , the file descriptor .Fa fd -need not have been -opened with the +need not have been opened with the .Dv O_EXEC flag. -However, if the file to be executed denies read and write -permission for the process preparing to do the exec, the only way to -provide the +However, if the file to be executed denies read permission for the process +preparing to do the exec, the only way to provide the .Fa fd to .Fn fexecve @@ -234,6 +232,7 @@ is to use the .Dv O_EXEC flag when opening .Fa fd . +Note that the file to be executed can not be open for writing. .Sh RETURN VALUES As the .Fn execve @@ -277,7 +276,7 @@ The new process file has the appropriate access permission, but has an invalid magic number in its header. .It Bq Er ETXTBSY The new process file is a pure procedure (shared text) -file that is currently open for writing or reading by some process. +file that is currently open for writing by some process. .It Bq Er ENOMEM The new process requires more virtual memory than is allowed by the imposed maximum |