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bfs_read_stat() now correctly reports the size of a link for symbolic links

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that are short enough to be placed in the short symlink region.
bfs_read_link() now makes sure that the link read is always null terminated.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9650 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2004-10-29 13:05:03 +00:00
parent 4c6085f68c
commit 755901d835
1 changed files with 9 additions and 2 deletions
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9
src/add-ons/kernel/file_systems/bfs/kernel_interface.cpp
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@ -640,6 +640,11 @@ bfs_read_stat(void *_ns, void *_node, struct stat *st)
st->st_uid = node->UserID();
st->st_gid = node->GroupID();
st->st_mode = node->Mode();
if (inode->IsSymLink() && (node->Flags() & INODE_LONG_SYMLINK) == 0) {
// symlinks report the size of the link here
st->st_size = strlen(node->short_symlink) + 1;
} else
st->st_size = node->data.Size();
st->st_atime = time(NULL);
@ -1323,13 +1328,15 @@ bfs_read_link(void *_ns, void *_node, char *buffer, size_t bufferSize)
RETURN_ERROR(B_BAD_VALUE);
if (inode->Flags() & INODE_LONG_SYMLINK) {
if (inode->Size() > bufferSize)
// we also need space for the terminating null byte
if (inode->Size() >= bufferSize)
return B_BUFFER_OVERFLOW;
status_t status = inode->ReadAt(0, (uint8 *)buffer, &bufferSize);
if (status < B_OK)
RETURN_ERROR(status);
buffer[bufferSize] = '\0';
return B_OK;
}