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files-reg: Rework strip_deleted helper

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Make it handle both postfixes and return
non-zero code if stipping happened.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Acked-by: Tycho Andersen <tycho.andersen@canonical.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Cyrill Gorcunov 2015-08-17 23:09:47 +03:00 committed by Pavel Emelyanov
parent 4f8f97e0bd
commit 60f6ec7dd6
2 changed files with 28 additions and 8 deletions
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34
files-reg.c
View File

@ -639,20 +639,38 @@ static inline bool nfs_silly_rename(char *rpath, const struct fd_parms *parms)
return (parms->fs_type == NFS_SUPER_MAGIC) && is_sillyrename_name(rpath);
}
static void strip_deleted(struct fd_link *link)
int strip_deleted(struct fd_link *link)
{
const char postfix[] = " (deleted)";
const size_t plen = strlen(postfix);
struct dcache_prepends {
const char *str;
size_t len;
} static const prepends[] = {
{
.str = " (deleted)",
.len = 10,
}, {
.str = "//deleted",
.len = 9,
}
};
size_t i;
if (link->len > plen) {
size_t at = link->len - plen;
if (!strcmp(&link->name[at], postfix)) {
for (i = 0; i < ARRAY_SIZE(prepends); i++) {
size_t at;
if (link->len <= prepends[i].len)
continue;
at = link->len - prepends[i].len;
if (!strcmp(&link->name[at], prepends[i].str)) {
pr_debug("Stip %s' tag from '%s'\n",
postfix, link->name);
prepends[i].str, link->name);
link->name[at] = '\0';
link->len -= plen;
link->len -= prepends[i].len;
return 1;
}
}
return 0;
}
static int check_path_remap(struct fd_link *link, const struct fd_parms *parms,

2
include/files-reg.h
View File

@ -51,4 +51,6 @@ extern struct collect_image_info remap_cinfo;
extern void delete_link_remaps(void);
extern void free_link_remaps(void);
extern int strip_deleted(struct fd_link *link);
#endif /* __CR_FILES_REG_H__ */