From fb7ddfc9fe330aeb8562e777878ec1f6bb317a8b Mon Sep 17 00:00:00 2001 From: pjd Date: Sun, 5 Jul 2009 20:20:09 +0000 Subject: - 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) --- lib/libc/sys/execve.2 | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) (limited to 'lib/libc') 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 -- cgit v1.1