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uml/hostfs: Propagate dirent.d_type to filldir()

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Currently the (optional) d_type member in struct dirent is always
DT_UNKNOWN on hostfs, which may confuse buggy software using readdir().
Make sure to propagate its value from the underlying filesystem if it's
available there.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Geert Uytterhoeven 2012-01-27 19:14:58 +01:00 committed by Richard Weinberger
parent c0b79a90b1
commit 3ee6bd8e8d
3 changed files with 8 additions and 4 deletions
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3
fs/hostfs/hostfs.h
View file

@ -67,7 +67,8 @@ extern int access_file(char *path, int r, int w, int x);
extern int open_file(char *path, int r, int w, int append);
extern void *open_dir(char *path, int *err_out);
extern char *read_dir(void *stream, unsigned long long *pos,
unsigned long long *ino_out, int *len_out);
unsigned long long *ino_out, int *len_out,
unsigned int *type_out);
extern void close_file(void *stream);
extern int replace_file(int oldfd, int fd);
extern void close_dir(void *stream);

5
fs/hostfs/hostfs_kern.c
View file

@ -283,6 +283,7 @@ int hostfs_readdir(struct file *file, void *ent, filldir_t filldir)
char *name;
unsigned long long next, ino;
int error, len;
unsigned int type;
name = dentry_name(file->f_path.dentry);
if (name == NULL)
@ -292,9 +293,9 @@ int hostfs_readdir(struct file *file, void *ent, filldir_t filldir)
if (dir == NULL)
return -error;
next = file->f_pos;
while ((name = read_dir(dir, &next, &ino, &len)) != NULL) {
while ((name = read_dir(dir, &next, &ino, &len, &type)) != NULL) {
error = (*filldir)(ent, name, len, file->f_pos,
ino, DT_UNKNOWN);
ino, type);
if (error) break;
file->f_pos = next;
}

4
fs/hostfs/hostfs_user.c
View file

@ -98,7 +98,8 @@ void *open_dir(char *path, int *err_out)
}
char *read_dir(void *stream, unsigned long long *pos,
unsigned long long *ino_out, int *len_out)
unsigned long long *ino_out, int *len_out,
unsigned int *type_out)
{
DIR *dir = stream;
struct dirent *ent;
@ -109,6 +110,7 @@ char *read_dir(void *stream, unsigned long long *pos,
return NULL;
*len_out = strlen(ent->d_name);
*ino_out = ent->d_ino;
*type_out = ent->d_type;
*pos = telldir(dir);
return ent->d_name;
}