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96 lines
2.2 KiB
Diff
96 lines
2.2 KiB
Diff
From 6f1143425a3afc4eb5086e9c90e7efb3affd7cb7 Mon Sep 17 00:00:00 2001
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From: Tony Ambardar <Tony.Ambardar@gmail.com>
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Date: Sat, 11 Jul 2020 06:35:46 -0700
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Subject: [PATCH 2/2] nftw: support common gnu extension
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Signed-off-by: Tony Ambardar <Tony.Ambardar@gmail.com>
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---
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include/ftw.h | 8 ++++++++
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src/misc/nftw.c | 35 ++++++++++++++++++++++++++++++-----
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2 files changed, 38 insertions(+), 5 deletions(-)
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--- a/include/ftw.h
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+++ b/include/ftw.h
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@@ -21,6 +21,14 @@ extern "C" {
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#define FTW_CHDIR 4
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#define FTW_DEPTH 8
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+#ifdef _GNU_SOURCE
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+#define FTW_ACTIONRETVAL 16
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+#define FTW_CONTINUE 0
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+#define FTW_STOP 1
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+#define FTW_SKIP_SUBTREE 2
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+#define FTW_SKIP_SIBLINGS 3
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+#endif
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+
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struct FTW {
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int base;
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int level;
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--- a/src/misc/nftw.c
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+++ b/src/misc/nftw.c
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@@ -1,3 +1,4 @@
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+#define _GNU_SOURCE
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#include <ftw.h>
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#include <dirent.h>
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#include <sys/stat.h>
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@@ -63,8 +64,20 @@ static int do_nftw(char *path, int (*fn)
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lev.base = k;
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}
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- if (!(flags & FTW_DEPTH) && (r=fn(path, &st, type, &lev)))
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- return r;
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+ if (!(flags & FTW_DEPTH) && (r=fn(path, &st, type, &lev))) {
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+ if (flags & FTW_ACTIONRETVAL)
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+ switch (r) {
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+ case FTW_SKIP_SUBTREE:
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+ h = NULL;
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+ case FTW_CONTINUE:
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+ break;
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+ case FTW_SKIP_SIBLINGS:
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+ case FTW_STOP:
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+ return r;
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+ }
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+ else
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+ return r;
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+ }
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for (; h; h = h->chain)
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if (h->dev == st.st_dev && h->ino == st.st_ino)
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@@ -88,7 +101,10 @@ static int do_nftw(char *path, int (*fn)
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strcpy(path+j+1, de->d_name);
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if ((r=do_nftw(path, fn, fd_limit-1, flags, &new))) {
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closedir(d);
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- return r;
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+ if ((flags & FTW_ACTIONRETVAL) && r == FTW_SKIP_SIBLINGS)
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+ break;
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+ else
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+ return r;
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}
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}
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closedir(d);
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@@ -98,8 +114,16 @@ static int do_nftw(char *path, int (*fn)
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}
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path[l] = 0;
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- if ((flags & FTW_DEPTH) && (r=fn(path, &st, type, &lev)))
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- return r;
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+ if ((flags & FTW_DEPTH) && (r=fn(path, &st, type, &lev))) {
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+ if (flags & FTW_ACTIONRETVAL)
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+ switch (r) {
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+ case FTW_SKIP_SIBLINGS:
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+ case FTW_STOP:
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+ return r;
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+ }
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+ else
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+ return r;
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+ }
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return 0;
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}
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@@ -125,4 +149,5 @@ int nftw(const char *path, int (*fn)(con
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return r;
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}
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+#undef nftw64
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weak_alias(nftw, nftw64);
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