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[PATCH] strbuf_readlink semantics update.

From
Pierre Habouzit <madcoder@debian.org>
Date
Dec 23, 2008, 10:05 UTC
Message-ID
<1230026749-25360-1-git-send-email-madcoder@debian.org>
In-Reply-To
<alpine.LFD.2.00.0812171042120.14014@localhost.localdomain>

strbuf_* operations are meant to append their results to a current buffer rather than _replace_ its content. Modify strbuf_readlink accordingly.

Current callers only operate on empty buffers at the moment and this semantic change doesn't break any current code.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
---
 strbuf.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/strbuf.c b/strbuf.c
index bdf4954..254a7ee 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -299,12 +299,12 @@ int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint)
 		int len;
 
 		strbuf_grow(sb, hint);
-		len = readlink(path, sb->buf, hint);
+		len = readlink(path, sb->buf + sb->len, hint);
 		if (len < 0) {
 			if (errno != ERANGE)
 				break;
 		} else if (len < hint) {
-			strbuf_setlen(sb, len);
+			strbuf_setlen(sb, sb->len + len);
 			return 0;
 		}
 
-- 
1.6.1.rc4.304.g3da087
Previous: Linus TorvaldsNext: Pierre Habouzit
Message 25 of 33 in “Be careful about lstat()-vs-readlink()”
  1. 0/5 Be careful about lstat()-vs-readlink()Linus Torvalds, Dec 17, 2008
  2. 1/5 Add generic 'strbuf_readlink()' helper functionLinus Torvalds, Dec 17, 2008
  3. 2/5 Make 'ce_compare_link()' use the new 'strbuf_readlink()'Linus Torvalds, Dec 17, 2008
  4. 3/5 Make 'index_path()' use 'strbuf_readlink()'Linus Torvalds, Dec 17, 2008
  5. 4/5 Make 'diff_populate_filespec()' use the new 'strbuf_readlink()'Linus Torvalds, Dec 17, 2008
  6. 5/5 Make 'prepare_temp_file()' ignore st_size for symlinksLinus Torvalds, Dec 17, 2008
  7. 6/5 make_absolute_path(): check bounds when seeing an overlong symlinkJunio C Hamano, Dec 17, 2008
  8. 7/5 builtin-blame.c: use strbuf_readlink()Junio C Hamano, Dec 17, 2008
  9. 8/5 combine-diff.c: use strbuf_readlink()Junio C Hamano, Dec 17, 2008
  10. Linus TorvaldsDec 17, 2008
  11. Junio C HamanoDec 17, 2008
  12. Junio C HamanoDec 17, 2008
  13. Mark BurtonDec 18, 2008
  14. Linus TorvaldsDec 18, 2008
  15. René ScharfeDec 18, 2008
  16. Linus TorvaldsDec 18, 2008
  17. Olivier GalibertDec 18, 2008
  18. René ScharfeDec 18, 2008
  19. René ScharfeDec 18, 2008
  20. diff.c: fix pointer type warningRené Scharfe, Dec 19, 2008
  21. Junio C HamanoDec 19, 2008
  22. Junio C HamanoDec 17, 2008
  23. Jay SoffianDec 17, 2008
  24. Linus TorvaldsDec 17, 2008
  25. strbuf_readlink semantics update.Pierre Habouzit, Dec 23, 2008
  26. Pierre HabouzitDec 23, 2008
  27. Linus TorvaldsDec 23, 2008
  28. Pierre HabouzitDec 24, 2008
  29. René ScharfeDec 24, 2008
  30. Junio C HamanoDec 25, 2008
  31. Pierre HabouzitJan 4, 2009
  32. strbuf: instate cleanup rule in case of non-memory errorsRené Scharfe, Jan 6, 2009
  33. Junio C HamanoJan 7, 2009

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