diff --git a/path.c b/path.c
index b80d2e6e4c..d3d3f8b8ad 100644
--- a/path.c
+++ b/path.c
@@ -570,20 +570,20 @@ int normalize_path_copy(char *dst, const char *src)
/*
* path = Canonical absolute path
- * prefixes = string_list containing absolute paths
+ * prefixes = string_list containing normalized, absolute paths without
+ * trailing slashes (except for the root directory, which is denoted by "/").
*
- * Determines, for each path in prefixes, whether the "prefix" really
+ * Determines, for each path in prefixes, whether the "prefix"
* is an ancestor directory of path. Returns the length of the longest
* ancestor directory, excluding any trailing slashes, or -1 if no prefix
* is an ancestor. (Note that this means 0 is returned if prefixes is
* ["/"].) "/foo" is not considered an ancestor of "/foobar". Directories
* are not considered to be their own ancestors. path must be in a
* canonical form: empty components, or "." or ".." components are not
- * allowed. Empty strings in prefixes are ignored.
+ * allowed.
*/
int longest_ancestor_length(const char *path, struct string_list *prefixes)
{
- char buf[PATH_MAX+1];
int i, max_len = -1;
if (!strcmp(path, "/"))
@@ -593,19 +593,15 @@ int longest_ancestor_length(const char *path, struct string_list *prefixes)
const char *ceil = prefixes->items[i].string;
int len = strlen(ceil);
- if (len == 0 || len > PATH_MAX || !is_absolute_path(ceil))
- continue;
- if (normalize_path_copy(buf, ceil) < 0)
- continue;
- len = strlen(buf);
- if (len > 0 && buf[len-1] == '/')
- buf[--len] = '\0';
+ if (len == 1 && ceil[0] == '/')
+ len = 0; /* root matches anything, with length 0 */
+ else if (!strncmp(path, ceil, len) && path[len] == '/')
+ ; /* match of length len */
+ else
+ continue; /* no match */
- if (!strncmp(path, buf, len) &&
- path[len] == '/' &&
- len > max_len) {
+ if (len > max_len)
max_len = len;
- }
}
return max_len;
diff --git a/setup.c b/setup.c
index b4cd356456..df97ad3976 100644
--- a/setup.c
+++ b/setup.c
@@ -621,6 +621,28 @@ static dev_t get_device_or_die(const char *path, const char *prefix, int prefix_
return buf.st_dev;
}
+/*
+ * A "string_list_each_func_t" function that normalizes an entry from
+ * GIT_CEILING_DIRECTORIES or discards it if unusable.
+ */
+static int normalize_ceiling_entry(struct string_list_item *item, void *unused)
+{
+ const char *ceil = item->string;
+ int len = strlen(ceil);
+ char buf[PATH_MAX+1];
+
+ if (len == 0 || len > PATH_MAX || !is_absolute_path(ceil))
+ return 0;
+ if (normalize_path_copy(buf, ceil) < 0)
+ return 0;
+ len = strlen(buf);
+ if (len > 1 && buf[len-1] == '/')
+ buf[--len] = '\0';
+ free(item->string);
+ item->string = xstrdup(buf);
+ return 1;
+}
+
/*
* We cannot decide in this function whether we are in the work tree or
* not, since the config can only be read _after_ this function was called.
@@ -659,6 +681,7 @@ static const char *setup_git_directory_gently_1(int *nongit_ok)
if (env_ceiling_dirs) {
string_list_split(&ceiling_dirs, env_ceiling_dirs, PATH_SEP, -1);
+ filter_string_list(&ceiling_dirs, 0, normalize_ceiling_entry, NULL);
ceil_offset = longest_ancestor_length(cwd, &ceiling_dirs);
string_list_clear(&ceiling_dirs, 0);
}
diff --git a/t/t0060-path-utils.sh b/t/t0060-path-utils.sh
index 4ef2345982..09a42a428e 100755
--- a/t/t0060-path-utils.sh
+++ b/t/t0060-path-utils.sh
@@ -93,47 +93,32 @@ norm_path /d1/s1//../s2/../../d2 /d2 POSIX
norm_path /d1/.../d2 /d1/.../d2 POSIX
norm_path /d1/..././../d2 /d1/d2 POSIX
-ancestor / "" -1
ancestor / / -1
-ancestor /foo "" -1
-ancestor /foo : -1
-ancestor /foo ::. -1
-ancestor /foo ::..:: -1
ancestor /foo / 0
ancestor /foo /fo -1
ancestor /foo /foo -1
-ancestor /foo /foo/ -1
ancestor /foo /bar -1
-ancestor /foo /bar/ -1
ancestor /foo /foo/bar -1
-ancestor /foo /foo:/bar/ -1
-ancestor /foo /foo/:/bar/ -1
-ancestor /foo /foo::/bar/ -1
-ancestor /foo /:/foo:/bar/ 0
-ancestor /foo /foo:/:/bar/ 0
-ancestor /foo /:/bar/:/foo 0
-ancestor /foo/bar "" -1
+ancestor /foo /foo:/bar -1
+ancestor /foo /:/foo:/bar 0
+ancestor /foo /foo:/:/bar 0
+ancestor /foo /:/bar:/foo 0
ancestor /foo/bar / 0
ancestor /foo/bar /fo -1
-ancestor /foo/bar foo -1
ancestor /foo/bar /foo 4
-ancestor /foo/bar /foo/ 4
ancestor /foo/bar /foo/ba -1
ancestor /foo/bar /:/fo 0
ancestor /foo/bar /foo:/foo/ba 4
ancestor /foo/bar /bar -1
-ancestor /foo/bar /bar/ -1
-ancestor /foo/bar /fo: -1
-ancestor /foo/bar :/fo -1
-ancestor /foo/bar /foo:/bar/ 4
-ancestor /foo/bar /:/foo:/bar/ 4
-ancestor /foo/bar /foo:/:/bar/ 4
-ancestor /foo/bar /:/bar/:/fo 0
-ancestor /foo/bar /:/bar/ 0
-ancestor /foo/bar .:/foo/. 4
-ancestor /foo/bar .:/foo/.:.: 4
-ancestor /foo/bar /foo/./:.:/bar 4
-ancestor /foo/bar .:/bar -1
+ancestor /foo/bar /fo -1
+ancestor /foo/bar /foo:/bar 4
+ancestor /foo/bar /:/foo:/bar 4
+ancestor /foo/bar /foo:/:/bar 4
+ancestor /foo/bar /:/bar:/fo 0
+ancestor /foo/bar /:/bar 0
+ancestor /foo/bar /foo 4
+ancestor /foo/bar /foo:/bar 4
+ancestor /foo/bar /bar -1
test_expect_success 'strip_path_suffix' '
test c:/msysgit = $(test-path-utils strip_path_suffix \
diff --git a/test-path-utils.c b/test-path-utils.c
index acb05600df..0092cbf354 100644
--- a/test-path-utils.c
+++ b/test-path-utils.c
@@ -1,6 +1,33 @@
#include "cache.h"
#include "string-list.h"
+/*
+ * A "string_list_each_func_t" function that normalizes an entry from
+ * GIT_CEILING_DIRECTORIES. If the path is unusable for some reason,
+ * die with an explanation.
+ */
+static int normalize_ceiling_entry(struct string_list_item *item, void *unused)
+{
+ const char *ceil = item->string;
+ int len = strlen(ceil);
+ char buf[PATH_MAX+1];
+
+ if (len == 0)
+ die("Empty path is not supported");
+ if (len > PATH_MAX)
+ die("Path \"%s\" is too long", ceil);
+ if (!is_absolute_path(ceil))
+ die("Path \"%s\" is not absolute", ceil);
+ if (normalize_path_copy(buf, ceil) < 0)
+ die("Path \"%s\" could not be normalized", ceil);
+ len = strlen(buf);
+ if (len > 1 && buf[len-1] == '/')
+ die("Normalized path \"%s\" ended with slash", buf);
+ free(item->string);
+ item->string = xstrdup(buf);
+ return 1;
+}
+
int main(int argc, char **argv)
{
if (argc == 3 && !strcmp(argv[1], "normalize_path_copy")) {
@@ -33,10 +60,26 @@ int main(int argc, char **argv)
if (argc == 4 && !strcmp(argv[1], "longest_ancestor_length")) {
int len;
struct string_list ceiling_dirs = STRING_LIST_INIT_DUP;
+ char *path = xstrdup(argv[2]);
+ /*
+ * We have to normalize the arguments because under
+ * Windows, bash mangles arguments that look like
+ * absolute POSIX paths or colon-separate lists of
+ * absolute POSIX paths into DOS paths (e.g.,
+ * "/foo:/foo/bar" might be converted to
+ * "D:\Src\msysgit\foo;D:\Src\msysgit\foo\bar"),
+ * whereas longest_ancestor_length() requires paths
+ * that use forward slashes.
+ */
+ if (normalize_path_copy(path, path))
+ die("Path \"%s\" could not be normalized", argv[2]);
string_list_split(&ceiling_dirs, argv[3], PATH_SEP, -1);
- len = longest_ancestor_length(argv[2], &ceiling_dirs);
+ filter_string_list(&ceiling_dirs, 0,
+ normalize_ceiling_entry, NULL);
+ len = longest_ancestor_length(path, &ceiling_dirs);
string_list_clear(&ceiling_dirs, 0);
+ free(path);
printf("%d\n", len);
return 0;
}