[thirdparty/git.git] / diagnose.c

#include "cache.h"
#include "diagnose.h"
#include "compat/disk.h"
#include "archive.h"
#include "dir.h"
#include "help.h"
#include "hex.h"
#include "strvec.h"
#include "object-store.h"
#include "packfile.h"

struct archive_dir {
	const char *path;
	int recursive;
};

struct diagnose_option {
	enum diagnose_mode mode;
	const char *option_name;
};

static struct diagnose_option diagnose_options[] = {
	{ DIAGNOSE_STATS, "stats" },
	{ DIAGNOSE_ALL, "all" },
};

int option_parse_diagnose(const struct option *opt, const char *arg, int unset)
{
	int i;
	enum diagnose_mode *diagnose = opt->value;

	if (!arg) {
		*diagnose = unset ? DIAGNOSE_NONE : DIAGNOSE_STATS;
		return 0;
	}

	for (i = 0; i < ARRAY_SIZE(diagnose_options); i++) {
		if (!strcmp(arg, diagnose_options[i].option_name)) {
			*diagnose = diagnose_options[i].mode;
			return 0;
		}
	}

	return error(_("invalid --%s value '%s'"), opt->long_name, arg);
}

static void dir_file_stats_objects(const char *full_path,
				   size_t full_path_len UNUSED,
				   const char *file_name, void *data)
{
	struct strbuf *buf = data;
	struct stat st;

	if (!stat(full_path, &st))
		strbuf_addf(buf, "%-70s %16" PRIuMAX "\n", file_name,
			    (uintmax_t)st.st_size);
}

static int dir_file_stats(struct object_directory *object_dir, void *data)
{
	struct strbuf *buf = data;

	strbuf_addf(buf, "Contents of %s:\n", object_dir->path);

	for_each_file_in_pack_dir(object_dir->path, dir_file_stats_objects,
				  data);

	return 0;
}

/*
 * Get the d_type of a dirent. If the d_type is unknown, derive it from
 * stat.st_mode.
 *
 * Note that 'path' is assumed to have a trailing slash. It is also modified
 * in-place during the execution of the function, but is then reverted to its
 * original value before returning.
 */
static unsigned char get_dtype(struct dirent *e, struct strbuf *path)
{
	struct stat st;
	unsigned char dtype = DTYPE(e);
	size_t base_path_len;

	if (dtype != DT_UNKNOWN)
		return dtype;

	/* d_type unknown in dirent, try to fall back on lstat results */
	base_path_len = path->len;
	strbuf_addstr(path, e->d_name);
	if (lstat(path->buf, &st))
		goto cleanup;

	/* determine d_type from st_mode */
	if (S_ISREG(st.st_mode))
		dtype = DT_REG;
	else if (S_ISDIR(st.st_mode))
		dtype = DT_DIR;
	else if (S_ISLNK(st.st_mode))
		dtype = DT_LNK;

cleanup:
	strbuf_setlen(path, base_path_len);
	return dtype;
}

static int count_files(struct strbuf *path)
{
	DIR *dir = opendir(path->buf);
	struct dirent *e;
	int count = 0;

	if (!dir)
		return 0;

	while ((e = readdir_skip_dot_and_dotdot(dir)) != NULL)
		if (get_dtype(e, path) == DT_REG)
			count++;

	closedir(dir);
	return count;
}

static void loose_objs_stats(struct strbuf *buf, const char *path)
{
	DIR *dir = opendir(path);
	struct dirent *e;
	int count;
	int total = 0;
	unsigned char c;
	struct strbuf count_path = STRBUF_INIT;
	size_t base_path_len;

	if (!dir)
		return;

	strbuf_addstr(buf, "Object directory stats for ");
	strbuf_add_absolute_path(buf, path);
	strbuf_addstr(buf, ":\n");

	strbuf_add_absolute_path(&count_path, path);
	strbuf_addch(&count_path, '/');
	base_path_len = count_path.len;

	while ((e = readdir_skip_dot_and_dotdot(dir)) != NULL)
		if (get_dtype(e, &count_path) == DT_DIR &&
		    strlen(e->d_name) == 2 &&
		    !hex_to_bytes(&c, e->d_name, 1)) {
			strbuf_setlen(&count_path, base_path_len);
			strbuf_addf(&count_path, "%s/", e->d_name);
			total += (count = count_files(&count_path));
			strbuf_addf(buf, "%s : %7d files\n", e->d_name, count);
		}

	strbuf_addf(buf, "Total: %d loose objects", total);

	strbuf_release(&count_path);
	closedir(dir);
}

static int add_directory_to_archiver(struct strvec *archiver_args,
				     const char *path, int recurse)
{
	int at_root = !*path;
	DIR *dir;
	struct dirent *e;
	struct strbuf buf = STRBUF_INIT;
	size_t len;
	int res = 0;

	dir = opendir(at_root ? "." : path);
	if (!dir) {
		if (errno == ENOENT) {
			warning(_("could not archive missing directory '%s'"), path);
			return 0;
		}
		return error_errno(_("could not open directory '%s'"), path);
	}

	if (!at_root)
		strbuf_addf(&buf, "%s/", path);
	len = buf.len;
	strvec_pushf(archiver_args, "--prefix=%s", buf.buf);

	while (!res && (e = readdir_skip_dot_and_dotdot(dir))) {
		struct strbuf abspath = STRBUF_INIT;
		unsigned char dtype;

		strbuf_add_absolute_path(&abspath, at_root ? "." : path);
		strbuf_addch(&abspath, '/');
		dtype = get_dtype(e, &abspath);

		strbuf_setlen(&buf, len);
		strbuf_addstr(&buf, e->d_name);

		if (dtype == DT_REG)
			strvec_pushf(archiver_args, "--add-file=%s", buf.buf);
		else if (dtype != DT_DIR)
			warning(_("skipping '%s', which is neither file nor "
				  "directory"), buf.buf);
		else if (recurse &&
			 add_directory_to_archiver(archiver_args,
						   buf.buf, recurse) < 0)
			res = -1;

		strbuf_release(&abspath);
	}

	closedir(dir);
	strbuf_release(&buf);
	return res;
}

int create_diagnostics_archive(struct strbuf *zip_path, enum diagnose_mode mode)
{
	struct strvec archiver_args = STRVEC_INIT;
	char **argv_copy = NULL;
	int stdout_fd = -1, archiver_fd = -1;
	struct strbuf buf = STRBUF_INIT;
	int res, i;
	struct archive_dir archive_dirs[] = {
		{ ".git", 0 },
		{ ".git/hooks", 0 },
		{ ".git/info", 0 },
		{ ".git/logs", 1 },
		{ ".git/objects/info", 0 }
	};

	if (mode == DIAGNOSE_NONE) {
		res = 0;
		goto diagnose_cleanup;
	}

	stdout_fd = dup(STDOUT_FILENO);
	if (stdout_fd < 0) {
		res = error_errno(_("could not duplicate stdout"));
		goto diagnose_cleanup;
	}

	archiver_fd = xopen(zip_path->buf, O_CREAT | O_WRONLY | O_TRUNC, 0666);
	if (dup2(archiver_fd, STDOUT_FILENO) < 0) {
		res = error_errno(_("could not redirect output"));
		goto diagnose_cleanup;
	}

	init_zip_archiver();
	strvec_pushl(&archiver_args, "git-diagnose", "--format=zip", NULL);

	strbuf_reset(&buf);
	strbuf_addstr(&buf, "Collecting diagnostic info\n\n");
	get_version_info(&buf, 1);

	strbuf_addf(&buf, "Repository root: %s\n", the_repository->worktree);
	get_disk_info(&buf);
	write_or_die(stdout_fd, buf.buf, buf.len);
	strvec_pushf(&archiver_args,
		     "--add-virtual-file=diagnostics.log:%.*s",
		     (int)buf.len, buf.buf);

	strbuf_reset(&buf);
	strbuf_addstr(&buf, "--add-virtual-file=packs-local.txt:");
	dir_file_stats(the_repository->objects->odb, &buf);
	foreach_alt_odb(dir_file_stats, &buf);
	strvec_push(&archiver_args, buf.buf);

	strbuf_reset(&buf);
	strbuf_addstr(&buf, "--add-virtual-file=objects-local.txt:");
	loose_objs_stats(&buf, ".git/objects");
	strvec_push(&archiver_args, buf.buf);

	/* Only include this if explicitly requested */
	if (mode == DIAGNOSE_ALL) {
		for (i = 0; i < ARRAY_SIZE(archive_dirs); i++) {
			if (add_directory_to_archiver(&archiver_args,
						      archive_dirs[i].path,
						      archive_dirs[i].recursive)) {
				res = error_errno(_("could not add directory '%s' to archiver"),
						  archive_dirs[i].path);
				goto diagnose_cleanup;
			}
		}
	}

	strvec_pushl(&archiver_args, "--prefix=",
		     oid_to_hex(the_hash_algo->empty_tree), "--", NULL);

	/* `write_archive()` modifies the `argv` passed to it. Let it. */
	argv_copy = xmemdupz(archiver_args.v,
			     sizeof(char *) * archiver_args.nr);
	res = write_archive(archiver_args.nr, (const char **)argv_copy, NULL,
			    the_repository, NULL, 0);
	if (res) {
		error(_("failed to write archive"));
		goto diagnose_cleanup;
	}

	fprintf(stderr, "\n"
		"Diagnostics complete.\n"
		"All of the gathered info is captured in '%s'\n",
		zip_path->buf);

diagnose_cleanup:
	if (archiver_fd >= 0) {
		dup2(stdout_fd, STDOUT_FILENO);
		close(stdout_fd);
		close(archiver_fd);
	}
	free(argv_copy);
	strvec_clear(&archiver_args);
	strbuf_release(&buf);

	return res;
}
Commit	Line	Data
bb2c3495 VD	1	#include "cache.h"
	2	#include "diagnose.h"
	3	#include "compat/disk.h"
	4	#include "archive.h"
	5	#include "dir.h"
	6	#include "help.h"
41771fa4	7	#include "hex.h"
bb2c3495 VD	8	#include "strvec.h"
	9	#include "object-store.h"
	10	#include "packfile.h"
	11
33cba726 VD	12	struct archive_dir {
	13	const char *path;
	14	int recursive;
	15	};
	16
7ecf193f VD	17	struct diagnose_option {
	18	enum diagnose_mode mode;
	19	const char *option_name;
	20	};
	21
	22	static struct diagnose_option diagnose_options[] = {
	23	{ DIAGNOSE_STATS, "stats" },
	24	{ DIAGNOSE_ALL, "all" },
	25	};
	26
	27	int option_parse_diagnose(const struct option opt, const char arg, int unset)
	28	{
	29	int i;
	30	enum diagnose_mode *diagnose = opt->value;
	31
	32	if (!arg) {
	33	*diagnose = unset ? DIAGNOSE_NONE : DIAGNOSE_STATS;
	34	return 0;
	35	}
	36
	37	for (i = 0; i < ARRAY_SIZE(diagnose_options); i++) {
	38	if (!strcmp(arg, diagnose_options[i].option_name)) {
	39	*diagnose = diagnose_options[i].mode;
	40	return 0;
	41	}
	42	}
	43
	44	return error(_("invalid --%s value '%s'"), opt->long_name, arg);
	45	}
	46
be252d33 JK	47	static void dir_file_stats_objects(const char *full_path,
be252d33 JK	48	size_t full_path_len UNUSED,
bb2c3495 VD	49	const char file_name, void data)
	50	{
	51	struct strbuf *buf = data;
	52	struct stat st;
	53
	54	if (!stat(full_path, &st))
	55	strbuf_addf(buf, "%-70s %16" PRIuMAX "\n", file_name,
	56	(uintmax_t)st.st_size);
	57	}
	58
	59	static int dir_file_stats(struct object_directory object_dir, void data)
	60	{
	61	struct strbuf *buf = data;
	62
	63	strbuf_addf(buf, "Contents of %s:\n", object_dir->path);
	64
	65	for_each_file_in_pack_dir(object_dir->path, dir_file_stats_objects,
	66	data);
	67
	68	return 0;
	69	}
	70
cb98e1d5 VD	71	/*
	72	* Get the d_type of a dirent. If the d_type is unknown, derive it from
	73	* stat.st_mode.
	74	*
	75	* Note that 'path' is assumed to have a trailing slash. It is also modified
	76	* in-place during the execution of the function, but is then reverted to its
	77	* original value before returning.
	78	*/
	79	static unsigned char get_dtype(struct dirent e, struct strbuf path)
bb2c3495	80	{
cb98e1d5 VD	81	struct stat st;
	82	unsigned char dtype = DTYPE(e);
	83	size_t base_path_len;
	84
	85	if (dtype != DT_UNKNOWN)
	86	return dtype;
	87
	88	/* d_type unknown in dirent, try to fall back on lstat results */
	89	base_path_len = path->len;
	90	strbuf_addstr(path, e->d_name);
	91	if (lstat(path->buf, &st))
	92	goto cleanup;
	93
	94	/* determine d_type from st_mode */
	95	if (S_ISREG(st.st_mode))
	96	dtype = DT_REG;
	97	else if (S_ISDIR(st.st_mode))
	98	dtype = DT_DIR;
	99	else if (S_ISLNK(st.st_mode))
	100	dtype = DT_LNK;
	101
	102	cleanup:
	103	strbuf_setlen(path, base_path_len);
	104	return dtype;
	105	}
	106
	107	static int count_files(struct strbuf *path)
	108	{
	109	DIR *dir = opendir(path->buf);
bb2c3495 VD	110	struct dirent *e;
	111	int count = 0;
	112
	113	if (!dir)
	114	return 0;
	115
cb98e1d5 VD	116	while ((e = readdir_skip_dot_and_dotdot(dir)) != NULL)
cb98e1d5 VD	117	if (get_dtype(e, path) == DT_REG)
bb2c3495 VD	118	count++;
	119
	120	closedir(dir);
	121	return count;
	122	}
	123
	124	static void loose_objs_stats(struct strbuf buf, const char path)
	125	{
	126	DIR *dir = opendir(path);
	127	struct dirent *e;
	128	int count;
	129	int total = 0;
	130	unsigned char c;
	131	struct strbuf count_path = STRBUF_INIT;
	132	size_t base_path_len;
	133
	134	if (!dir)
	135	return;
	136
	137	strbuf_addstr(buf, "Object directory stats for ");
	138	strbuf_add_absolute_path(buf, path);
	139	strbuf_addstr(buf, ":\n");
	140
	141	strbuf_add_absolute_path(&count_path, path);
	142	strbuf_addch(&count_path, '/');
	143	base_path_len = count_path.len;
	144
cb98e1d5 VD	145	while ((e = readdir_skip_dot_and_dotdot(dir)) != NULL)
	146	if (get_dtype(e, &count_path) == DT_DIR &&
	147	strlen(e->d_name) == 2 &&
bb2c3495 VD	148	!hex_to_bytes(&c, e->d_name, 1)) {
bb2c3495 VD	149	strbuf_setlen(&count_path, base_path_len);
cb98e1d5 VD	150	strbuf_addf(&count_path, "%s/", e->d_name);
cb98e1d5 VD	151	total += (count = count_files(&count_path));
bb2c3495 VD	152	strbuf_addf(buf, "%s : %7d files\n", e->d_name, count);
	153	}
	154
	155	strbuf_addf(buf, "Total: %d loose objects", total);
	156
	157	strbuf_release(&count_path);
	158	closedir(dir);
	159	}
	160
	161	static int add_directory_to_archiver(struct strvec *archiver_args,
	162	const char *path, int recurse)
	163	{
	164	int at_root = !*path;
	165	DIR *dir;
	166	struct dirent *e;
	167	struct strbuf buf = STRBUF_INIT;
	168	size_t len;
	169	int res = 0;
	170
	171	dir = opendir(at_root ? "." : path);
	172	if (!dir) {
	173	if (errno == ENOENT) {
	174	warning(_("could not archive missing directory '%s'"), path);
	175	return 0;
	176	}
	177	return error_errno(_("could not open directory '%s'"), path);
	178	}
	179
	180	if (!at_root)
	181	strbuf_addf(&buf, "%s/", path);
	182	len = buf.len;
	183	strvec_pushf(archiver_args, "--prefix=%s", buf.buf);
	184
cb98e1d5 VD	185	while (!res && (e = readdir_skip_dot_and_dotdot(dir))) {
	186	struct strbuf abspath = STRBUF_INIT;
	187	unsigned char dtype;
	188
	189	strbuf_add_absolute_path(&abspath, at_root ? "." : path);
	190	strbuf_addch(&abspath, '/');
	191	dtype = get_dtype(e, &abspath);
bb2c3495 VD	192
	193	strbuf_setlen(&buf, len);
	194	strbuf_addstr(&buf, e->d_name);
	195
cb98e1d5	196	if (dtype == DT_REG)
bb2c3495	197	strvec_pushf(archiver_args, "--add-file=%s", buf.buf);
cb98e1d5	198	else if (dtype != DT_DIR)
bb2c3495 VD	199	warning(_("skipping '%s', which is neither file nor "
	200	"directory"), buf.buf);
	201	else if (recurse &&
	202	add_directory_to_archiver(archiver_args,
	203	buf.buf, recurse) < 0)
	204	res = -1;
cb98e1d5 VD	205
cb98e1d5 VD	206	strbuf_release(&abspath);
bb2c3495 VD	207	}
	208
	209	closedir(dir);
	210	strbuf_release(&buf);
	211	return res;
	212	}
	213
33cba726	214	int create_diagnostics_archive(struct strbuf *zip_path, enum diagnose_mode mode)
bb2c3495 VD	215	{
	216	struct strvec archiver_args = STRVEC_INIT;
	217	char **argv_copy = NULL;
	218	int stdout_fd = -1, archiver_fd = -1;
	219	struct strbuf buf = STRBUF_INIT;
33cba726 VD	220	int res, i;
	221	struct archive_dir archive_dirs[] = {
	222	{ ".git", 0 },
	223	{ ".git/hooks", 0 },
	224	{ ".git/info", 0 },
	225	{ ".git/logs", 1 },
	226	{ ".git/objects/info", 0 }
	227	};
	228
	229	if (mode == DIAGNOSE_NONE) {
	230	res = 0;
	231	goto diagnose_cleanup;
	232	}
bb2c3495 VD	233
	234	stdout_fd = dup(STDOUT_FILENO);
	235	if (stdout_fd < 0) {
	236	res = error_errno(_("could not duplicate stdout"));
	237	goto diagnose_cleanup;
	238	}
	239
	240	archiver_fd = xopen(zip_path->buf, O_CREAT \| O_WRONLY \| O_TRUNC, 0666);
	241	if (dup2(archiver_fd, STDOUT_FILENO) < 0) {
	242	res = error_errno(_("could not redirect output"));
	243	goto diagnose_cleanup;
	244	}
	245
	246	init_zip_archiver();
	247	strvec_pushl(&archiver_args, "git-diagnose", "--format=zip", NULL);
	248
	249	strbuf_reset(&buf);
	250	strbuf_addstr(&buf, "Collecting diagnostic info\n\n");
	251	get_version_info(&buf, 1);
	252
	253	strbuf_addf(&buf, "Repository root: %s\n", the_repository->worktree);
	254	get_disk_info(&buf);
	255	write_or_die(stdout_fd, buf.buf, buf.len);
	256	strvec_pushf(&archiver_args,
	257	"--add-virtual-file=diagnostics.log:%.*s",
	258	(int)buf.len, buf.buf);
	259
	260	strbuf_reset(&buf);
	261	strbuf_addstr(&buf, "--add-virtual-file=packs-local.txt:");
	262	dir_file_stats(the_repository->objects->odb, &buf);
	263	foreach_alt_odb(dir_file_stats, &buf);
	264	strvec_push(&archiver_args, buf.buf);
	265
	266	strbuf_reset(&buf);
	267	strbuf_addstr(&buf, "--add-virtual-file=objects-local.txt:");
	268	loose_objs_stats(&buf, ".git/objects");
	269	strvec_push(&archiver_args, buf.buf);
	270
33cba726 VD	271	/* Only include this if explicitly requested */
	272	if (mode == DIAGNOSE_ALL) {
	273	for (i = 0; i < ARRAY_SIZE(archive_dirs); i++) {
	274	if (add_directory_to_archiver(&archiver_args,
	275	archive_dirs[i].path,
	276	archive_dirs[i].recursive)) {
	277	res = error_errno(_("could not add directory '%s' to archiver"),
	278	archive_dirs[i].path);
	279	goto diagnose_cleanup;
	280	}
	281	}
	282	}
bb2c3495 VD	283
	284	strvec_pushl(&archiver_args, "--prefix=",
	285	oid_to_hex(the_hash_algo->empty_tree), "--", NULL);
	286
	287	/* `write_archive()` modifies the `argv` passed to it. Let it. */
	288	argv_copy = xmemdupz(archiver_args.v,
	289	sizeof(char ) archiver_args.nr);
	290	res = write_archive(archiver_args.nr, (const char **)argv_copy, NULL,
	291	the_repository, NULL, 0);
	292	if (res) {
	293	error(_("failed to write archive"));
	294	goto diagnose_cleanup;
	295	}
	296
	297	fprintf(stderr, "\n"
	298	"Diagnostics complete.\n"
	299	"All of the gathered info is captured in '%s'\n",
	300	zip_path->buf);
	301
	302	diagnose_cleanup:
	303	if (archiver_fd >= 0) {
	304	dup2(stdout_fd, STDOUT_FILENO);
	305	close(stdout_fd);
	306	close(archiver_fd);
	307	}
	308	free(argv_copy);
	309	strvec_clear(&archiver_args);
	310	strbuf_release(&buf);
	311
	312	return res;
	313	}