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containerfs: convert char devices(0, 0) to whiteout

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Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This commit is contained in:
Giuseppe Scrivano 2018-06-30 18:49:35 +02:00
parent 7bbfb5b479
commit 54d1c2157f
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GPG Key ID: E4730F97F60286ED
1 changed files with 16 additions and 2 deletions
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18
main.c
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@ -46,6 +46,7 @@
#include <sys/stat.h>
#include <sys/syscall.h>
#include <fts.h>
#include <sys/sysmacros.h>
#include <sys/xattr.h>
@ -577,7 +578,9 @@ traverse_dir (char * const dir, struct lo_node *lower, bool low)
struct lo_node *root, *n, *parent;
int ret = -1;
char *const dirs[] = {dir, NULL};
FTS *fts = fts_open (dirs, FTS_NOSTAT | FTS_COMFOLLOW, NULL);
const char *name;
char tmp[PATH_MAX + 4];
FTS *fts = fts_open (dirs, FTS_COMFOLLOW, NULL);
if (fts == NULL)
return NULL;
@ -624,7 +627,18 @@ traverse_dir (char * const dir, struct lo_node *lower, bool low)
case FTS_SL:
case FTS_SLNONE:
case FTS_DEFAULT:
n = make_lo_node (ent->fts_path, ent->fts_name, false);
name = ent->fts_name;
if ((ent->fts_statp->st_mode & S_IFMT) == S_IFCHR)
{
if (major (ent->fts_statp->st_rdev) == 0
&& minor (ent->fts_statp->st_rdev) == 0)
{
sprintf (tmp, ".wh.%s", ent->fts_name);
name = tmp;
}
}
n = make_lo_node (ent->fts_path, name, false);
if (n == NULL)
goto err;
n->low = low ? 1 : 0;