Merge branch 'jk/config-warn-on-inaccessible-paths'

When looking for $HOME/.gitconfig etc., it is OK if we cannot read
them because they do not exist, but we did not diagnose existing
files that we cannot read.

* jk/config-warn-on-inaccessible-paths:
warn_on_inaccessible(): a helper to warn on inaccessible paths
attr: warn on inaccessible attribute files
gitignore: report access errors of exclude files
config: warn on inaccessible files

diff --git a/attr.c b/attr.c
index b52efb55a036be10618d531d66697d7f7220c524..f12c83f80a0f03b2112c212e46c571ec4074abf3 100644 (file)
--- a/attr.c
+++ b/attr.c
@@ -352,8 +352,11 @@ static struct attr_stack *read_attr_from_file(const char *path, int macro_ok)
        char buf[2048];
        int lineno = 0;
 
-       if (!fp)
+       if (!fp) {
+               if (errno != ENOENT)
+                       warn_on_inaccessible(path);
                return NULL;
+       }
        res = xcalloc(1, sizeof(*res));
        while (fgets(buf, sizeof(buf), fp))
                handle_attr_line(res, buf, path, ++lineno, macro_ok);

diff --git a/builtin/config.c b/builtin/config.c
index ada6e1211462558f307dce6142b7b65d641c8e02..442ccc2497c4e2e889d9de55359e36a1db07c1a4 100644 (file)
--- a/builtin/config.c
+++ b/builtin/config.c
@@ -400,8 +400,8 @@ int cmd_config(int argc, const char **argv, const char *prefix)
                         */
                        die("$HOME not set");
 
-               if (access(user_config, R_OK) &&
-                   xdg_config && !access(xdg_config, R_OK))
+               if (access_or_warn(user_config, R_OK) &&
+                   xdg_config && !access_or_warn(xdg_config, R_OK))
                        given_config_file = xdg_config;
                else
                        given_config_file = user_config;

diff --git a/config.c b/config.c
index 2b706ea2053714fdcec8997d978ce5688d072941..08e47e2e48a5bd310025752ee5ecdce81721b34d 100644 (file)
--- a/config.c
+++ b/config.c
@@ -60,7 +60,7 @@ static int handle_path_include(const char *path, struct config_include_data *inc
                path = buf.buf;
        }
 
-       if (!access(path, R_OK)) {
+       if (!access_or_warn(path, R_OK)) {
                if (++inc->depth > MAX_INCLUDE_DEPTH)
                        die(include_depth_advice, MAX_INCLUDE_DEPTH, path,
                            cf && cf->name ? cf->name : "the command line");
@@ -939,23 +939,23 @@ int git_config_early(config_fn_t fn, void *data, const char *repo_config)
 
        home_config_paths(&user_config, &xdg_config, "config");
 
-       if (git_config_system() && !access(git_etc_gitconfig(), R_OK)) {
+       if (git_config_system() && !access_or_warn(git_etc_gitconfig(), R_OK)) {
                ret += git_config_from_file(fn, git_etc_gitconfig(),
                                            data);
                found += 1;
        }
 
-       if (xdg_config && !access(xdg_config, R_OK)) {
+       if (xdg_config && !access_or_warn(xdg_config, R_OK)) {
                ret += git_config_from_file(fn, xdg_config, data);
                found += 1;
        }
 
-       if (user_config && !access(user_config, R_OK)) {
+       if (user_config && !access_or_warn(user_config, R_OK)) {
                ret += git_config_from_file(fn, user_config, data);
                found += 1;
        }
 
-       if (repo_config && !access(repo_config, R_OK)) {
+       if (repo_config && !access_or_warn(repo_config, R_OK)) {
                ret += git_config_from_file(fn, repo_config, data);
                found += 1;
        }

diff --git a/dir.c b/dir.c
index 240bf0c49c9654b7cef56959786613e17113c3a0..486833986ed4b4e7d05d2086d53b15ec63905dd0 100644 (file)
--- a/dir.c
+++ b/dir.c
@@ -397,6 +397,8 @@ int add_excludes_from_file_to_list(const char *fname,
 
        fd = open(fname, O_RDONLY);
        if (fd < 0 || fstat(fd, &st) < 0) {
+               if (errno != ENOENT)
+                       warn_on_inaccessible(fname);
                if (0 <= fd)
                        close(fd);
                if (!check_index ||
@@ -1311,9 +1313,9 @@ void setup_standard_excludes(struct dir_struct *dir)
                home_config_paths(NULL, &xdg_path, "ignore");
                excludes_file = xdg_path;
        }
-       if (!access(path, R_OK))
+       if (!access_or_warn(path, R_OK))
                add_excludes_from_file(dir, path);
-       if (excludes_file && !access(excludes_file, R_OK))
+       if (excludes_file && !access_or_warn(excludes_file, R_OK))
                add_excludes_from_file(dir, excludes_file);
 }
 

diff --git a/git-compat-util.h b/git-compat-util.h
index 34f040f59551c13b5e7c72bab12b8082b37a03ab..fd732d7243a9266302751189c32a57fd441a671d 100644 (file)
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -609,6 +609,12 @@ int rmdir_or_warn(const char *path);
  */
 int remove_or_warn(unsigned int mode, const char *path);
 
+/* Call access(2), but warn for any error besides ENOENT. */
+int access_or_warn(const char *path, int mode);
+
+/* Warn on an inaccessible file that ought to be accessible */
+void warn_on_inaccessible(const char *path);
+
 /* Get the passwd entry for the UID of the current process. */
 struct passwd *xgetpwuid_self(void);
 

diff --git a/wrapper.c b/wrapper.c
index b5e33e49c77bdf1d19292971b63ff5221b013f33..68739aaa3b9e9e1a1bbbd43c75c9b5c244fb6c3e 100644 (file)
--- a/wrapper.c
+++ b/wrapper.c
@@ -403,6 +403,19 @@ 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(_("unable to access '%s': %s"), path, strerror(errno));
+}
+
+int access_or_warn(const char *path, int mode)
+{
+       int ret = access(path, mode);
+       if (ret && errno != ENOENT)
+               warn_on_inaccessible(path);
+       return ret;
+}
+
 struct passwd *xgetpwuid_self(void)
 {
        struct passwd *pw;