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Cygwin: fix utils path handling in case cygdrive path is just '/' 

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2018-02-16 17:21:48 +01:00
parent f881942d77
commit 26bcedda20
2 changed files with 22 additions and 12 deletions
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2
winsup/cygwin/release/2.10.1
View File

@ -11,3 +11,5 @@ What changed:
Bug Fixes
---------
- Fix utils path handling in case cygdrive path is just '/'.
Addresses: https://cygwin.com/ml/cygwin/2018-02/msg00174.html

32
winsup/utils/path.cc
View File

@ -672,7 +672,7 @@ read_mounts ()
*/
static int
path_prefix_p (const char *path1, const char *path2, int len1)
path_prefix_p (const char *path1, const char *path2, size_t len1)
{
/* Handle case where PATH1 has trailing '/' and when it doesn't. */
if (len1 > 0 && isslash (path1[len1 - 1]))
@ -778,7 +778,7 @@ rel_vconcat (const char *cwd, const char *s, va_list v)
cwd = pathbuf;
}
int max_len = -1;
int max_len = 0;
mnt_t *m, *match = NULL;
for (m = mount_table; m->posix; m++)
@ -786,7 +786,7 @@ rel_vconcat (const char *cwd, const char *s, va_list v)
if (m->flags & MOUNT_CYGDRIVE)
continue;
int n = strlen (m->native);
size_t n = strlen (m->native);
if (n < max_len || !path_prefix_p (m->native, cwd, n))
continue;
max_len = n;
@ -821,7 +821,7 @@ rel_vconcat (const char *cwd, const char *s, va_list v)
static char *
vcygpath (const char *cwd, const char *s, va_list v)
{
int max_len = -1;
size_t max_len = 0;
mnt_t *m, *match = NULL;
if (!max_mount_entry)
@ -843,15 +843,23 @@ vcygpath (const char *cwd, const char *s, va_list v)
for (m = mount_table; m->posix; m++)
{
int n = strlen (m->posix);
size_t n = strlen (m->posix);
if (n < max_len || !path_prefix_p (m->posix, path, n))
continue;
if ((m->flags & MOUNT_CYGDRIVE)
&& ((int) strlen (path) < n + 2
|| path[n] != '/'
|| !isalpha (path[n + 1])
|| path[n + 2] != '/'))
continue;
if (m->flags & MOUNT_CYGDRIVE)
{
if (strlen (path) < n + 2)
continue;
/* If cygdrive path is just '/', fix n for followup evaluation. */
if (n == 1)
n = 0;
if (path[n] != '/')
continue;
if (!isalpha (path[n + 1]))
continue;
if (path[n + 2] != '/')
continue;
}
max_len = n;
match = m;
}
@ -859,7 +867,7 @@ vcygpath (const char *cwd, const char *s, va_list v)
char *native;
if (match == NULL)
native = strdup (path);
else if (max_len == (int) strlen (path))
else if (max_len == strlen (path))
native = strdup (match->native);
else if (match->flags & MOUNT_CYGDRIVE)
{