directory rename detection: more involved edge/corner testcases

diff --git a/wrapper.c b/wrapper.c
index d83741770949f457b364896b6ff8632c0a700d69..d20356a776bc63d4a94e4b421582433fb915087a 100644 (file)
--- a/wrapper.c
+++ b/wrapper.c
@@ -2,6 +2,7 @@
  * Various trivial helper wrappers around standard functions
  */
 #include "cache.h"
+#include "config.h"
 
 static void do_nothing(size_t size)
 {
@@ -418,6 +419,32 @@ FILE *fopen_for_writing(const char *path)
        return ret;
 }
 
+static void warn_on_inaccessible(const char *path)
+{
+       warning_errno(_("unable to access '%s'"), path);
+}
+
+int warn_on_fopen_errors(const char *path)
+{
+       if (errno != ENOENT && errno != ENOTDIR) {
+               warn_on_inaccessible(path);
+               return -1;
+       }
+
+       return 0;
+}
+
+FILE *fopen_or_warn(const char *path, const char *mode)
+{
+       FILE *fp = fopen(path, mode);
+
+       if (fp)
+               return fp;
+
+       warn_on_fopen_errors(path);
+       return NULL;
+}
+
 int xmkstemp(char *template)
 {
        int fd;
@@ -542,7 +569,7 @@ static int warn_if_unremovable(const char *op, const char *file, int rc)
        if (!rc || errno == ENOENT)
                return 0;
        err = errno;
-       warning_errno("unable to %s %s", op, file);
+       warning_errno("unable to %s '%s'", op, file);
        errno = err;
        return rc;
 }
@@ -556,7 +583,7 @@ int unlink_or_msg(const char *file, struct strbuf *err)
        if (!rc || errno == ENOENT)
                return 0;
 
-       strbuf_addf(err, "unable to unlink %s: %s",
+       strbuf_addf(err, "unable to unlink '%s': %s",
                    file, strerror(errno));
        return -1;
 }
@@ -576,15 +603,10 @@ int remove_or_warn(unsigned int mode, const char *file)
        return S_ISGITLINK(mode) ? rmdir_or_warn(file) : unlink_or_warn(file);
 }
 
-void warn_on_inaccessible(const char *path)
-{
-       warning_errno(_("unable to access '%s'"), path);
-}
-
 static int access_error_is_ok(int err, unsigned flag)
 {
-       return err == ENOENT || err == ENOTDIR ||
-               ((flag & ACCESS_EACCES_OK) && err == EACCES);
+       return (is_missing_file_error(err) ||
+               ((flag & ACCESS_EACCES_OK) && err == EACCES));
 }
 
 int access_or_warn(const char *path, int mode, unsigned flag)
@@ -630,10 +652,10 @@ int xsnprintf(char *dst, size_t max, const char *fmt, ...)
 void write_file_buf(const char *path, const char *buf, size_t len)
 {
        int fd = xopen(path, O_WRONLY | O_CREAT | O_TRUNC, 0666);
-       if (write_in_full(fd, buf, len) != len)
-               die_errno(_("could not write to %s"), path);
+       if (write_in_full(fd, buf, len) < 0)
+               die_errno(_("could not write to '%s'"), path);
        if (close(fd))
-               die_errno(_("could not close %s"), path);
+               die_errno(_("could not close '%s'"), path);
 }
 
 void write_file(const char *path, const char *fmt, ...)