Browse Source

Readlink implementation for Image filesystem.

release-1.5.4.branch
Vreixo Formoso 14 years ago
parent
commit
33635c4e41
  1. 52
      src/fs_image.c

52
src/fs_image.c

@ -466,11 +466,59 @@ int ifs_readdir(IsoFileSource *src, IsoFileSource **child)
return ISO_SUCCESS;
}
/**
* Read the destination of a symlink. You don't need to open the file
* to call this.
*
* @param buf
* allocated buffer of at least bufsiz bytes.
* The dest. will be copied there, and it will be NULL-terminated
* @param bufsiz
* characters to be copied. Destination link will be truncated if
* it is larger than given size. This include the \0 character.
* @return
* 1 on success, < 0 on error
* Error codes:
* ISO_FILE_ERROR
* ISO_NULL_POINTER
* ISO_WRONG_ARG_VALUE -> if bufsiz <= 0
* ISO_FILE_IS_NOT_SYMLINK
* ISO_MEM_ERROR
* ISO_FILE_BAD_PATH
* ISO_FILE_DOESNT_EXIST
*
*/
static
int ifs_readlink(IsoFileSource *src, char *buf, size_t bufsiz)
{
//TODO implement
return -1;
char *dest;
size_t len;
ImageFileSourceData *data;
if (src == NULL || buf == NULL || src->data == NULL) {
return ISO_NULL_POINTER;
}
if (bufsiz <= 0) {
return ISO_WRONG_ARG_VALUE;
}
data = (ImageFileSourceData*)src->data;
if (!S_ISLNK(data->info.st_mode)) {
return ISO_FILE_IS_NOT_SYMLINK;
}
dest = (char*)data->data.content;
len = strlen(dest);
if (bufsiz <= len) {
len = bufsiz - 1;
}
strncpy(buf, dest, len);
buf[len] = '\0';
return ISO_SUCCESS;
}
static

Loading…
Cancel
Save