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[PATCH 01/30] get_ref_dir(): return early if directory cannot be read

From
mhagger@alum.mit.edu <mhagger@alum.mit.edu>
Date
Apr 24, 2012, 22:45 UTC
Message-ID
<1335307536-26914-2-git-send-email-mhagger@alum.mit.edu>
In-Reply-To
<1335307536-26914-1-git-send-email-mhagger@alum.mit.edu>
From: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
 refs.c |   85 +++++++++++++++++++++++++++++++++-------------------------------
 1 file changed, 44 insertions(+), 41 deletions(-)
diff --git a/refs.c b/refs.c
index 09322fe..d539241 100644
--- a/refs.c
+++ b/refs.c
@@ -754,6 +754,9 @@ static void get_ref_dir(struct ref_cache *refs, const char *base,
 {
 	DIR *d;
 	const char *path;
+	struct dirent *de;
+	int baselen;
+	char *refname;
 
 	if (*refs->name)
 		path = git_path_submodule(refs->name, "%s", base);
@@ -761,55 +764,55 @@ static void get_ref_dir(struct ref_cache *refs, const char *base,
 		path = git_path("%s", base);
 
 	d = opendir(path);
-	if (d) {
-		struct dirent *de;
-		int baselen = strlen(base);
-		char *refname = xmalloc(baselen + 257);
+	if (!d)
+		return;
 
-		memcpy(refname, base, baselen);
-		if (baselen && base[baselen-1] != '/')
-			refname[baselen++] = '/';
+	baselen = strlen(base);
+	refname = xmalloc(baselen + 257);
 
-		while ((de = readdir(d)) != NULL) {
-			unsigned char sha1[20];
-			struct stat st;
-			int flag;
-			int namelen;
-			const char *refdir;
+	memcpy(refname, base, baselen);
+	if (baselen && base[baselen-1] != '/')
+		refname[baselen++] = '/';
 
-			if (de->d_name[0] == '.')
-				continue;
-			namelen = strlen(de->d_name);
-			if (namelen > 255)
-				continue;
-			if (has_extension(de->d_name, ".lock"))
-				continue;
-			memcpy(refname + baselen, de->d_name, namelen+1);
-			refdir = *refs->name
-				? git_path_submodule(refs->name, "%s", refname)
-				: git_path("%s", refname);
-			if (stat(refdir, &st) < 0)
-				continue;
-			if (S_ISDIR(st.st_mode)) {
-				get_ref_dir(refs, refname, dir);
-				continue;
-			}
-			if (*refs->name) {
-				hashclr(sha1);
-				flag = 0;
-				if (resolve_gitlink_ref(refs->name, refname, sha1) < 0) {
-					hashclr(sha1);
-					flag |= REF_ISBROKEN;
-				}
-			} else if (read_ref_full(refname, sha1, 1, &flag)) {
+	while ((de = readdir(d)) != NULL) {
+		unsigned char sha1[20];
+		struct stat st;
+		int flag;
+		int namelen;
+		const char *refdir;
+
+		if (de->d_name[0] == '.')
+			continue;
+		namelen = strlen(de->d_name);
+		if (namelen > 255)
+			continue;
+		if (has_extension(de->d_name, ".lock"))
+			continue;
+		memcpy(refname + baselen, de->d_name, namelen+1);
+		refdir = *refs->name
+			? git_path_submodule(refs->name, "%s", refname)
+			: git_path("%s", refname);
+		if (stat(refdir, &st) < 0)
+			continue;
+		if (S_ISDIR(st.st_mode)) {
+			get_ref_dir(refs, refname, dir);
+			continue;
+		}
+		if (*refs->name) {
+			hashclr(sha1);
+			flag = 0;
+			if (resolve_gitlink_ref(refs->name, refname, sha1) < 0) {
 				hashclr(sha1);
 				flag |= REF_ISBROKEN;
 			}
-			add_ref(dir, create_ref_entry(refname, sha1, flag, 1));
+		} else if (read_ref_full(refname, sha1, 1, &flag)) {
+			hashclr(sha1);
+			flag |= REF_ISBROKEN;
 		}
-		free(refname);
-		closedir(d);
+		add_ref(dir, create_ref_entry(refname, sha1, flag, 1));
 	}
+	free(refname);
+	closedir(d);
 }
 
 static struct ref_dir *get_loose_refs(struct ref_cache *refs)

-- 
1.7.10
Previous: mhagger@alum.mit.eduNext: mhagger@alum.mit.edu
Message 2 of 37 in “Read loose references lazily”
  1. 00/30 Read loose references lazilymhagger@alum.mit.edu, Apr 24, 2012
  2. 01/30 get_ref_dir(): return early if directory cannot be readmhagger@alum.mit.edu, Apr 24, 2012
  3. 02/30 get_ref_dir(): use a strbuf to hold refnamemhagger@alum.mit.edu, Apr 24, 2012
  4. 03/30 get_ref_dir(): rename "base" parameter to "dirname"mhagger@alum.mit.edu, Apr 24, 2012
  5. 04/30 get_ref_dir(): require that the dirname argument ends in '/'mhagger@alum.mit.edu, Apr 24, 2012
  6. 05/30 refs.c: extract function search_for_subdir()mhagger@alum.mit.edu, Apr 24, 2012
  7. 06/30 get_ref_dir(): take the containing directory as argumentmhagger@alum.mit.edu, Apr 24, 2012
  8. 07/30 do_for_each_reflog(): return early on errormhagger@alum.mit.edu, Apr 24, 2012
  9. 08/30 do_for_each_reflog(): use a strbuf to hold logfile namemhagger@alum.mit.edu, Apr 24, 2012
  10. 09/30 do_for_each_reflog(): reuse strbuf across recursive function callsmhagger@alum.mit.edu, Apr 24, 2012
  11. 10/30 refs: wrap top-level ref_dirs in ref_entriesmhagger@alum.mit.edu, Apr 24, 2012
  12. Michael HaggertyApr 26, 2012
  13. 11/30 get_packed_refs(): return (ref_entry *) instead of (ref_dir *)mhagger@alum.mit.edu, Apr 24, 2012
  14. 12/30 get_loose_refs(): return (ref_entry *) instead of (ref_dir *)mhagger@alum.mit.edu, Apr 24, 2012
  15. 13/30 is_refname_available(): take (ref_entry *) instead of (ref_dir *)mhagger@alum.mit.edu, Apr 24, 2012
  16. 14/30 find_ref(): take (ref_entry *) instead of (ref_dir *)mhagger@alum.mit.edu, Apr 24, 2012
  17. 15/30 read_packed_refs(): take (ref_entry *) instead of (ref_dir *)mhagger@alum.mit.edu, Apr 24, 2012
  18. 16/30 add_ref(): take (ref_entry *) instead of (ref_dir *)mhagger@alum.mit.edu, Apr 24, 2012
  19. 17/30 find_containing_direntry(): use (ref_entry *) instead of (ref_dir *)mhagger@alum.mit.edu, Apr 24, 2012
  20. 18/30 get_ref_dir(): take (ref_entry *) instead of (ref_dir *)mhagger@alum.mit.edu, Apr 24, 2012
  21. 19/30 get_ref_dir(): remove dirname argumentmhagger@alum.mit.edu, Apr 24, 2012
  22. 20/30 search_for_subdir(): take (ref_entry *) instead of (ref_dir *)mhagger@alum.mit.edu, Apr 24, 2012
  23. 21/30 search_ref_dir(): take (ref_entry *) instead of (ref_dir *)mhagger@alum.mit.edu, Apr 24, 2012
  24. 22/30 add_entry(): take (ref_entry *) instead of (ref_dir *)mhagger@alum.mit.edu, Apr 24, 2012
  25. 23/30 do_for_each_ref_in_dirs(): take (ref_entry *) instead of (ref_dir *)mhagger@alum.mit.edu, Apr 24, 2012
  26. 24/30 do_for_each_ref_in_dir(): take (ref_entry *) instead of (ref_dir *)mhagger@alum.mit.edu, Apr 24, 2012
  27. 25/30 sort_ref_dir(): take (ref_entry *) instead of (ref_dir *)mhagger@alum.mit.edu, Apr 24, 2012
  28. 26/30 struct ref_dir: store a reference to the enclosing ref_cachemhagger@alum.mit.edu, Apr 24, 2012
  29. 27/30 read_loose_refs(): rename function from get_ref_dir()mhagger@alum.mit.edu, Apr 24, 2012
  30. 28/30 read_loose_refs(): access ref_cache via the ref_dir fieldmhagger@alum.mit.edu, Apr 24, 2012
  31. 29/30 create_dir_entry(): allow the flag value to be passed as an argumentmhagger@alum.mit.edu, Apr 24, 2012
  32. Junio C HamanoApr 25, 2012
  33. Junio C HamanoApr 25, 2012
  34. Michael HaggertyApr 26, 2012
  35. 30/30 refs: read loose references lazilymhagger@alum.mit.edu, Apr 24, 2012
  36. Junio C HamanoApr 25, 2012
  37. Michael HaggertyApr 26, 2012

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