Merge branch 'tr/die_errno'

* tr/die_errno:
  Use die_errno() instead of die() when checking syscalls
  Convert existing die(..., strerror(errno)) to die_errno()
  die_errno(): double % in strerror() output just in case
  Introduce die_errno() that appends strerror(errno) to die()

Author: gitster

abspath.c

@@ -41,13 +41,13 @@ const char *make_absolute_path(const char *path)
 
 		if (*buf) {
 			if (!*cwd && !getcwd(cwd, sizeof(cwd)))
-				die ("Could not get current working directory");
+				die_errno ("Could not get current working directory");
 
 			if (chdir(buf))
-				die ("Could not switch to '%s'", buf);
+				die_errno ("Could not switch to '%s'", buf);
 		}
 		if (!getcwd(buf, PATH_MAX))
-			die ("Could not get current working directory");
+			die_errno ("Could not get current working directory");
 
 		if (last_elem) {
 			int len = strlen(buf);
@@ -63,7 +63,7 @@ const char *make_absolute_path(const char *path)
 		if (!lstat(buf, &st) && S_ISLNK(st.st_mode)) {
 			len = readlink(buf, next_buf, PATH_MAX);
 			if (len < 0)
-				die ("Invalid symlink: %s", buf);
+				die_errno ("Invalid symlink '%s'", buf);
 			if (PATH_MAX <= len)
 				die("symbolic link too long: %s", buf);
 			next_buf[len] = '\0';
@@ -75,7 +75,7 @@ const char *make_absolute_path(const char *path)
 	}
 
 	if (*cwd && chdir(cwd))
-		die ("Could not change back to '%s'", cwd);
+		die_errno ("Could not change back to '%s'", cwd);
 
 	return buf;
 }
@@ -109,7 +109,7 @@ const char *make_nonrelative_path(const char *path)
 	} else {
 		const char *cwd = get_pwd_cwd();
 		if (!cwd)
-			die("Cannot determine the current working directory");
+			die_errno("Cannot determine the current working directory");
 		if (snprintf(buf, PATH_MAX, "%s/%s", cwd, path) >= PATH_MAX)
 			die("Too long path: %.*s", 60, path);
 	}

bisect.c

@@ -461,7 +461,7 @@ static void read_bisect_paths(struct argv_array *array)
 	FILE *fp = fopen(filename, "r");
 
 	if (!fp)
-		die("Could not open file '%s': %s", filename, strerror(errno));
+		die_errno("Could not open file '%s'", filename);
 
 	while (strbuf_getline(&str, fp, '\n') != EOF) {
 		char *quoted;
@@ -740,8 +740,7 @@ static void mark_expected_rev(char *bisect_rev_hex)
 	int fd = open(filename, O_CREAT | O_TRUNC | O_WRONLY, 0600);
 
 	if (fd < 0)
-		die("could not create file '%s': %s",
-		    filename, strerror(errno));
+		die_errno("could not create file '%s'", filename);
 
 	bisect_rev_hex[len] = '\n';
 	write_or_die(fd, bisect_rev_hex, len + 1);

branch.c

@@ -172,7 +172,7 @@ void create_branch(const char *head,
 
 	lock = lock_any_ref_for_update(ref.buf, NULL, 0);
 	if (!lock)
-		die("Failed to lock ref for update: %s.", strerror(errno));
+		die_errno("Failed to lock ref for update");
 
 	if (reflog)
 		log_all_ref_updates = 1;
@@ -188,7 +188,7 @@ void create_branch(const char *head,
 		setup_tracking(name, real_ref, track);
 
 	if (write_ref_sha1(lock, sha1, msg) < 0)
-		die("Failed to write ref: %s.", strerror(errno));
+		die_errno("Failed to write ref");
 
 	strbuf_release(&ref);
 	free(real_ref);

builtin-add.c

@@ -220,7 +220,7 @@ static int edit_patch(int argc, const char **argv, const char *prefix)
 	launch_editor(file, NULL, NULL);
 
 	if (stat(file, &st))
-		die("Could not stat '%s'", file);
+		die_errno("Could not stat '%s'", file);
 	if (!st.st_size)
 		die("Empty patch. Aborted.");
 

builtin-apply.c

@@ -280,7 +280,7 @@ static void say_patch_name(FILE *output, const char *pre,
 static void read_patch_file(struct strbuf *sb, int fd)
 {
 	if (strbuf_read(sb, fd, 0) < 0)
-		die("git apply: read returned %s", strerror(errno));
+		die_errno("git apply: failed to read");
 
 	/*
 	 * Make sure that we have some slop in the buffer
@@ -2823,8 +2823,8 @@ static void add_index_file(const char *path, unsigned mode, void *buf, unsigned
 	} else {
 		if (!cached) {
 			if (lstat(path, &st) < 0)
-				die("unable to stat newly created file %s",
-				    path);
+				die_errno("unable to stat newly created file '%s'",
+					  path);
 			fill_stat_cache_info(ce, &st);
 		}
 		if (write_sha1_file(buf, size, blob_type, ce->sha1) < 0)
@@ -2864,7 +2864,7 @@ static int try_create_file(const char *path, unsigned int mode, const char *buf,
 	strbuf_release(&nbuf);
 
 	if (close(fd) < 0)
-		die("closing file %s: %s", path, strerror(errno));
+		die_errno("closing file '%s'", path);
 	return 0;
 }
 
@@ -2913,7 +2913,7 @@ static void create_one_file(char *path, unsigned mode, const char *buf, unsigned
 			++nr;
 		}
 	}
-	die("unable to write file %s mode %o", path, mode);
+	die_errno("unable to write file '%s' mode %o", path, mode);
 }
 
 static void create_file(struct patch *patch)
@@ -3356,7 +3356,7 @@ int cmd_apply(int argc, const char **argv, const char *unused_prefix)
 
 		fd = open(arg, O_RDONLY);
 		if (fd < 0)
-			die("can't open patch '%s': %s", arg, strerror(errno));
+			die_errno("can't open patch '%s'", arg);
 		read_stdin = 0;
 		set_default_whitespace_mode(whitespace_option);
 		errs |= apply_patch(fd, arg, options);

builtin-archive.c

@@ -13,10 +13,10 @@ static void create_output_file(const char *output_file)
 {
 	int output_fd = open(output_file, O_CREAT | O_WRONLY | O_TRUNC, 0666);
 	if (output_fd < 0)
-		die("could not create archive file: %s ", output_file);
+		die_errno("could not create archive file '%s'", output_file);
 	if (output_fd != 1) {
 		if (dup2(output_fd, 1) < 0)
-			die("could not redirect output");
+			die_errno("could not redirect output");
 		else
 			close(output_fd);
 	}

builtin-blame.c

@@ -2008,23 +2008,23 @@ static struct commit *fake_working_tree_commit(const char *path, const char *con
 
 		if (contents_from) {
 			if (stat(contents_from, &st) < 0)
-				die("Cannot stat %s", contents_from);
+				die_errno("Cannot stat '%s'", contents_from);
 			read_from = contents_from;
 		}
 		else {
 			if (lstat(path, &st) < 0)
-				die("Cannot lstat %s", path);
+				die_errno("Cannot lstat '%s'", path);
 			read_from = path;
 		}
 		mode = canon_mode(st.st_mode);
 		switch (st.st_mode & S_IFMT) {
 		case S_IFREG:
 			if (strbuf_read_file(&buf, read_from, st.st_size) != st.st_size)
-				die("cannot open or read %s", read_from);
+				die_errno("cannot open or read '%s'", read_from);
 			break;
 		case S_IFLNK:
 			if (strbuf_readlink(&buf, read_from, st.st_size) < 0)
-				die("cannot readlink %s", read_from);
+				die_errno("cannot readlink '%s'", read_from);
 			break;
 		default:
 			die("unsupported file type %s", read_from);
@@ -2035,7 +2035,7 @@ static struct commit *fake_working_tree_commit(const char *path, const char *con
 		contents_from = "standard input";
 		mode = 0;
 		if (strbuf_read(&buf, 0, 0) < 0)
-			die("read error %s from stdin", strerror(errno));
+			die_errno("failed to read from stdin");
 	}
 	convert_to_git(path, buf.buf, buf.len, &buf, 0);
 	origin->file.ptr = buf.buf;
@@ -2261,8 +2261,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
 	argc = parse_options_end(&ctx);
 
 	if (revs_file && read_ancestry(revs_file))
-		die("reading graft file %s failed: %s",
-		    revs_file, strerror(errno));
+		die_errno("reading graft file '%s' failed", revs_file);
 
 	if (cmd_is_annotate) {
 		output_option |= OUTPUT_ANNOTATE_COMPAT;
@@ -2350,7 +2349,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
 
 		setup_work_tree();
 		if (!has_string_in_work_tree(path))
-			die("cannot stat path %s: %s", path, strerror(errno));
+			die_errno("cannot stat path '%s'", path);
 	}
 
 	setup_revisions(argc, argv, &revs, NULL);

builtin-clone.c

@@ -220,13 +220,13 @@ static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest)
 
 	dir = opendir(src->buf);
 	if (!dir)
-		die("failed to open %s", src->buf);
+		die_errno("failed to open '%s'", src->buf);
 
 	if (mkdir(dest->buf, 0777)) {
 		if (errno != EEXIST)
-			die("failed to create directory %s", dest->buf);
+			die_errno("failed to create directory '%s'", dest->buf);
 		else if (stat(dest->buf, &buf))
-			die("failed to stat %s", dest->buf);
+			die_errno("failed to stat '%s'", dest->buf);
 		else if (!S_ISDIR(buf.st_mode))
 			die("%s exists and is not a directory", dest->buf);
 	}
@@ -252,17 +252,16 @@ static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest)
 		}
 
 		if (unlink(dest->buf) && errno != ENOENT)
-			die("failed to unlink %s: %s",
-			    dest->buf, strerror(errno));
+			die_errno("failed to unlink '%s'", dest->buf);
 		if (!option_no_hardlinks) {
 			if (!link(src->buf, dest->buf))
 				continue;
 			if (option_local)
-				die("failed to create link %s", dest->buf);
+				die_errno("failed to create link '%s'", dest->buf);
 			option_no_hardlinks = 1;
 		}
 		if (copy_file(dest->buf, src->buf, 0666))
-			die("failed to copy file to %s", dest->buf);
+			die_errno("failed to copy file to '%s'", dest->buf);
 	}
 	closedir(dir);
 }
@@ -420,11 +419,11 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 	if (!option_bare) {
 		junk_work_tree = work_tree;
 		if (safe_create_leading_directories_const(work_tree) < 0)
-			die("could not create leading directories of '%s': %s",
-					work_tree, strerror(errno));
+			die_errno("could not create leading directories of '%s'",
+				  work_tree);
 		if (!dest_exists && mkdir(work_tree, 0755))
-			die("could not create work tree dir '%s': %s.",
-					work_tree, strerror(errno));
+			die_errno("could not create work tree dir '%s'.",
+				  work_tree);
 		set_git_work_tree(work_tree);
 	}
 	junk_git_dir = git_dir;

builtin-commit-tree.c

@@ -124,7 +124,7 @@ int cmd_commit_tree(int argc, const char **argv, const char *prefix)
 	}
 
 	if (strbuf_read(&buffer, 0, 0) < 0)
-		die("git commit-tree: read returned %s", strerror(errno));
+		die_errno("git commit-tree: failed to read");
 
 	if (!commit_tree(buffer.buf, tree_sha1, parents, commit_sha1, NULL)) {
 		printf("%s\n", sha1_to_hex(commit_sha1));

builtin-commit.c

@@ -434,12 +434,12 @@ static int prepare_to_commit(const char *index_file, const char *prefix)
 		if (isatty(0))
 			fprintf(stderr, "(reading log message from standard input)\n");
 		if (strbuf_read(&sb, 0, 0) < 0)
-			die("could not read log from standard input");
+			die_errno("could not read log from standard input");
 		hook_arg1 = "message";
 	} else if (logfile) {
 		if (strbuf_read_file(&sb, logfile, 0) < 0)
-			die("could not read log file '%s': %s",
-			    logfile, strerror(errno));
+			die_errno("could not read log file '%s'",
+				  logfile);
 		hook_arg1 = "message";
 	} else if (use_message) {
 		buffer = strstr(use_message_buffer, "\n\n");
@@ -450,16 +450,15 @@ static int prepare_to_commit(const char *index_file, const char *prefix)
 		hook_arg2 = use_message;
 	} else if (!stat(git_path("MERGE_MSG"), &statbuf)) {
 		if (strbuf_read_file(&sb, git_path("MERGE_MSG"), 0) < 0)
-			die("could not read MERGE_MSG: %s", strerror(errno));
+			die_errno("could not read MERGE_MSG");
 		hook_arg1 = "merge";
 	} else if (!stat(git_path("SQUASH_MSG"), &statbuf)) {
 		if (strbuf_read_file(&sb, git_path("SQUASH_MSG"), 0) < 0)
-			die("could not read SQUASH_MSG: %s", strerror(errno));
+			die_errno("could not read SQUASH_MSG");
 		hook_arg1 = "squash";
 	} else if (template_file && !stat(template_file, &statbuf)) {
 		if (strbuf_read_file(&sb, template_file, 0) < 0)
-			die("could not read %s: %s",
-			    template_file, strerror(errno));
+			die_errno("could not read '%s'", template_file);
 		hook_arg1 = "template";
 	}
 
@@ -472,8 +471,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix)
 
 	fp = fopen(git_path(commit_editmsg), "w");
 	if (fp == NULL)
-		die("could not open %s: %s",
-		    git_path(commit_editmsg), strerror(errno));
+		die_errno("could not open '%s'", git_path(commit_editmsg));
 
 	if (cleanup_mode != CLEANUP_NONE)
 		stripspace(&sb, 0);
@@ -497,7 +495,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix)
 	}
 
 	if (fwrite(sb.buf, 1, sb.len, fp) < sb.len)
-		die("could not write commit template: %s", strerror(errno));
+		die_errno("could not write commit template");
 
 	strbuf_release(&sb);
 
@@ -940,8 +938,8 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 		pptr = &commit_list_insert(lookup_commit(head_sha1), pptr)->next;
 		fp = fopen(git_path("MERGE_HEAD"), "r");
 		if (fp == NULL)
-			die("could not open %s for reading: %s",
-			    git_path("MERGE_HEAD"), strerror(errno));
+			die_errno("could not open '%s' for reading",
+				  git_path("MERGE_HEAD"));
 		while (strbuf_getline(&m, fp, '\n') != EOF) {
 			unsigned char sha1[20];
 			if (get_sha1_hex(m.buf, sha1) < 0)
@@ -952,8 +950,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 		strbuf_release(&m);
 		if (!stat(git_path("MERGE_MODE"), &statbuf)) {
 			if (strbuf_read_file(&sb, git_path("MERGE_MODE"), 0) < 0)
-				die("could not read MERGE_MODE: %s",
-						strerror(errno));
+				die_errno("could not read MERGE_MODE");
 			if (!strcmp(sb.buf, "no-ff"))
 				allow_fast_forward = 0;
 		}
@@ -967,8 +964,9 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 	/* Finally, get the commit message */
 	strbuf_reset(&sb);
 	if (strbuf_read_file(&sb, git_path(commit_editmsg), 0) < 0) {
+		int saved_errno = errno;
 		rollback_index_files();
-		die("could not read commit message");
+		die("could not read commit message: %s", strerror(saved_errno));
 	}
 
 	/* Truncate the message just before the diff, if any. */