wine/gecko
0
0
Fork 0
mirror of https://gitlab.winehq.org/wine/wine-gecko.git synced 2024-09-13 09:24:08 -07:00
Code Issues Packages Projects Releases Wiki Activity

Bug 1055966 - Specify limitation of RemoteOpenFileChild::OpenNSPRFileDesc().

Browse Source
This commit is contained in:
Shian-Yow Wu 2014-08-21 09:40:19 +08:00
parent 157f4eb2d0
commit e9b6dc3b14
2 changed files with 15 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
modules/libjar/nsIJARChannel.idl
View File

@ -39,6 +39,13 @@ interface nsIJARChannel : nsIChannel
* For child process, set this to make sure that a valid file descriptor of
* JAR file is always provided when calling NSPRFileDesc().
* Must be set before Open() or AsyncOpen() to be effective.
*
* Note that the file descriptor returned by NSPRFileDesc() is duplicated
* from the original, which shares its file offset with the original. If
* the file offset is modified (ex: by lseek/read/write) on one of the
* shared descriptors, the offset is also changed for the other.
* It can be safely used only with operations that take absolute offsets,
* such as mmap/pread/pwrite.
*/
void ensureChildFd();
};

14
netwerk/ipc/RemoteOpenFileChild.h
View File

@ -32,13 +32,15 @@ namespace net {
*
* To open a file handle with this class, AsyncRemoteFileOpen() must be called
* first. After the listener's OnRemoteFileOpenComplete() is called, if the
* result is NS_OK, nsIFile.OpenNSPRFileDesc() may be called--once--to get the
* file handle.
* result is NS_OK, nsIFile.OpenNSPRFileDesc() may be called to get a
* duplicated file descriptor.
*
* Note that calling Clone() on this class results in the filehandle ownership
* being passed on to the new RemoteOpenFileChild. I.e. if
* OnRemoteFileOpenComplete is called and then Clone(), OpenNSPRFileDesc() will
* work in the cloned object, but not in the original.
* Note that the file descriptor returned by NSPRFileDesc() is duplicated from
* the original, which shares its file offset with the original. If the file
* offset is modified (ex: by lseek/read/write) on one of the shared
* descriptors, the offset is also changed for the other. It can be safely
* used only with operations that take absolute offsets, such as
* mmap/pread/pwrite.
*
* This class should only be instantiated in a child process.
*