[libgit2.git] / src / fileops.c

/*
 * Copyright (C) 2009-2012 the libgit2 contributors
 *
 * This file is part of libgit2, distributed under the GNU GPL v2 with
 * a Linking Exception. For full terms see the included COPYING file.
 */
#include "common.h"
#include "fileops.h"
#include <ctype.h>

int git_futils_mkpath2file(const char *file_path, const mode_t mode)
{
	int result = 0;
	git_buf target_folder = GIT_BUF_INIT;

	if (git_path_dirname_r(&target_folder, file_path) < 0)
		return -1;

	/* Does the containing folder exist? */
	if (git_path_isdir(target_folder.ptr) == false)
		/* Let's create the tree structure */
		result = git_futils_mkdir_r(target_folder.ptr, NULL, mode);

	git_buf_free(&target_folder);
	return result;
}

int git_futils_mktmp(git_buf *path_out, const char *filename)
{
	int fd;

	git_buf_sets(path_out, filename);
	git_buf_puts(path_out, "_git2_XXXXXX");

	if (git_buf_oom(path_out))
		return -1;

	if ((fd = p_mkstemp(path_out->ptr)) < 0) {
		giterr_set(GITERR_OS,
			"Failed to create temporary file '%s'", path_out->ptr);
		return -1;
	}

	return fd;
}

int git_futils_creat_withpath(const char *path, const mode_t dirmode, const mode_t mode)
{
	int fd;

	if (git_futils_mkpath2file(path, dirmode) < 0)
		return -1;

	fd = p_creat(path, mode);
	if (fd < 0) {
		giterr_set(GITERR_OS, "Failed to create file '%s'", path);
		return -1;
	}

	return fd;
}

int git_futils_creat_locked(const char *path, const mode_t mode)
{
	int fd;

#ifdef GIT_WIN32
	wchar_t* buf;

	buf = gitwin_to_utf16(path);
	fd = _wopen(buf, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY | O_EXCL, mode);
	git__free(buf);
#else
	fd = open(path, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY | O_EXCL, mode);
#endif

	if (fd < 0) {
		giterr_set(GITERR_OS, "Failed to create locked file '%s'", path);
		return -1;
	}

	return fd;
}

int git_futils_creat_locked_withpath(const char *path, const mode_t dirmode, const mode_t mode)
{
	if (git_futils_mkpath2file(path, dirmode) < 0)
		return -1;

	return git_futils_creat_locked(path, mode);
}

int git_futils_open_ro(const char *path)
{
	int fd = p_open(path, O_RDONLY);
	if (fd < 0) {
		if (errno == ENOENT || errno == ENOTDIR)
			fd = GIT_ENOTFOUND;
		giterr_set(GITERR_OS, "Failed to open '%s'", path);
	}
	return fd;
}

git_off_t git_futils_filesize(git_file fd)
{
	struct stat sb;

	if (p_fstat(fd, &sb)) {
		giterr_set(GITERR_OS, "Failed to stat file descriptor");
		return -1;
	}

	return sb.st_size;
}

mode_t git_futils_canonical_mode(mode_t raw_mode)
{
	if (S_ISREG(raw_mode))
		return S_IFREG | GIT_CANONICAL_PERMS(raw_mode);
	else if (S_ISLNK(raw_mode))
		return S_IFLNK;
	else if (S_ISGITLINK(raw_mode))
		return S_IFGITLINK;
	else if (S_ISDIR(raw_mode))
		return S_IFDIR;
	else
		return 0;
}

int git_futils_readbuffer_updated(git_buf *buf, const char *path, time_t *mtime, int *updated)
{
	git_file fd;
	size_t len;
	struct stat st;

	assert(buf && path && *path);

	if (updated != NULL)
		*updated = 0;

	if ((fd = git_futils_open_ro(path)) < 0)
		return fd;

	if (p_fstat(fd, &st) < 0 || S_ISDIR(st.st_mode) || !git__is_sizet(st.st_size+1)) {
		p_close(fd);
		giterr_set(GITERR_OS, "Invalid regular file stat for '%s'", path);
		return -1;
	}

	/*
	 * If we were given a time, we only want to read the file if it
	 * has been modified.
	 */
	if (mtime != NULL && *mtime >= st.st_mtime) {
		p_close(fd);
		return 0;
	}

	if (mtime != NULL)
		*mtime = st.st_mtime;

	len = (size_t) st.st_size;

	git_buf_clear(buf);

	if (git_buf_grow(buf, len + 1) < 0) {
		p_close(fd);
		return -1;
	}

	buf->ptr[len] = '\0';

	while (len > 0) {
		ssize_t read_size = p_read(fd, buf->ptr, len);

		if (read_size < 0) {
			p_close(fd);
			giterr_set(GITERR_OS, "Failed to read descriptor for '%s'", path);
			return -1;
		}

		len -= read_size;
		buf->size += read_size;
	}

	p_close(fd);

	if (updated != NULL)
		*updated = 1;

	return 0;
}

int git_futils_readbuffer(git_buf *buf, const char *path)
{
	return git_futils_readbuffer_updated(buf, path, NULL, NULL);
}

int git_futils_mv_withpath(const char *from, const char *to, const mode_t dirmode)
{
	if (git_futils_mkpath2file(to, dirmode) < 0)
		return -1;

	if (p_rename(from, to) < 0) {
		giterr_set(GITERR_OS, "Failed to rename '%s' to '%s'", from, to);
		return -1;
	}

	return 0;
}

int git_futils_mmap_ro(git_map *out, git_file fd, git_off_t begin, size_t len)
{
	return p_mmap(out, len, GIT_PROT_READ, GIT_MAP_SHARED, fd, begin);
}

int git_futils_mmap_ro_file(git_map *out, const char *path)
{
	git_file fd = git_futils_open_ro(path);
	git_off_t len;
	int result;

	if (fd < 0)
		return fd;

	len = git_futils_filesize(fd);
	if (!git__is_sizet(len)) {
		giterr_set(GITERR_OS, "File `%s` too large to mmap", path);
		return -1;
	}

	result = git_futils_mmap_ro(out, fd, 0, (size_t)len);
	p_close(fd);
	return result;
}

void git_futils_mmap_free(git_map *out)
{
	p_munmap(out);
}

int git_futils_mkdir_r(const char *path, const char *base, const mode_t mode)
{
	git_buf make_path = GIT_BUF_INIT;
	size_t start = 0;
	char *pp, *sp;
	bool failed = false;

	if (base != NULL) {
		/*
		 * when a base is being provided, it is supposed to already exist.
		 * Therefore, no attempt is being made to recursively create this leading path
		 * segment. It's just skipped. */
		start = strlen(base);
		if (git_buf_joinpath(&make_path, base, path) < 0)
			return -1;
	} else {
		int root_path_offset;

		if (git_buf_puts(&make_path, path) < 0)
			return -1;

		root_path_offset = git_path_root(make_path.ptr);
		if (root_path_offset > 0) {
			 /*
			  * On Windows, will skip the drive name (eg. C: or D:)
			  * or the leading part of a network path (eg. //computer_name ) */
			start = root_path_offset;
		}
	}

	pp = make_path.ptr + start;

	while (!failed && (sp = strchr(pp, '/')) != NULL) {
		if (sp != pp && git_path_isdir(make_path.ptr) == false) {
			*sp = 0;

			/* Do not choke while trying to recreate an existing directory */
			if (p_mkdir(make_path.ptr, mode) < 0 && errno != EEXIST)
				failed = true;

			*sp = '/';
		}

		pp = sp + 1;
	}

	if (*pp != '\0' && !failed) {
		if (p_mkdir(make_path.ptr, mode) < 0 && errno != EEXIST)
			failed = true;
	}

	git_buf_free(&make_path);

	if (failed) {
		giterr_set(GITERR_OS,
			"Failed to create directory structure at '%s'", path);
		return -1;
	}

	return 0;
}

static int _rmdir_recurs_foreach(void *opaque, git_buf *path)
{
	git_directory_removal_type removal_type = *(git_directory_removal_type *)opaque;

	assert(removal_type == GIT_DIRREMOVAL_EMPTY_HIERARCHY
		|| removal_type == GIT_DIRREMOVAL_FILES_AND_DIRS
		|| removal_type == GIT_DIRREMOVAL_ONLY_EMPTY_DIRS);

	if (git_path_isdir(path->ptr) == true) {
		if (git_path_direach(path, _rmdir_recurs_foreach, opaque) < 0)
			return -1;

		if (p_rmdir(path->ptr) < 0) {
			if (removal_type == GIT_DIRREMOVAL_ONLY_EMPTY_DIRS && (errno == ENOTEMPTY || errno == EEXIST))
				return 0;

			giterr_set(GITERR_OS, "Could not remove directory '%s'", path->ptr);
			return -1;
		}

		return 0;
	}

	if (removal_type == GIT_DIRREMOVAL_FILES_AND_DIRS) {
		if (p_unlink(path->ptr) < 0) {
			giterr_set(GITERR_OS, "Could not remove directory.  File '%s' cannot be removed", path->ptr);
			return -1;
		}

		return 0;
	}

	if (removal_type == GIT_DIRREMOVAL_EMPTY_HIERARCHY) {
		giterr_set(GITERR_OS, "Could not remove directory. File '%s' still present", path->ptr);
		return -1;
	}

	return 0;
}

int git_futils_rmdir_r(const char *path, git_directory_removal_type removal_type)
{
	int error;
	git_buf p = GIT_BUF_INIT;

	error = git_buf_sets(&p, path);
	if (!error)
		error = _rmdir_recurs_foreach(&removal_type, &p);
	git_buf_free(&p);
	return error;
}

#ifdef GIT_WIN32
struct win32_path {
	wchar_t path[MAX_PATH];
	DWORD len;
};

static int win32_expand_path(struct win32_path *s_root, const wchar_t *templ)
{
	s_root->len = ExpandEnvironmentStringsW(templ, s_root->path, MAX_PATH);
	return s_root->len ? 0 : -1;
}

static int win32_find_file(git_buf *path, const struct win32_path *root, const char *filename)
{
	int error = 0;
	size_t len;
	wchar_t *file_utf16 = NULL;
	char *file_utf8 = NULL;

	if (!root || !filename || (len = strlen(filename)) == 0)
		return GIT_ENOTFOUND;

	/* allocate space for wchar_t path to file */
	file_utf16 = git__calloc(root->len + len + 2, sizeof(wchar_t));
	GITERR_CHECK_ALLOC(file_utf16);

	/* append root + '\\' + filename as wchar_t */
	memcpy(file_utf16, root->path, root->len * sizeof(wchar_t));

	if (*filename == '/' || *filename == '\\')
		filename++;

	if (gitwin_append_utf16(file_utf16 + root->len - 1, filename, len + 1) !=
		(int)len + 1) {
		error = -1;
		goto cleanup;
	}

	/* check access */
	if (_waccess(file_utf16, F_OK) < 0) {
		error = GIT_ENOTFOUND;
		goto cleanup;
	}

	/* convert to utf8 */
	if ((file_utf8 = gitwin_from_utf16(file_utf16)) == NULL)
		error = -1;
	else {
		git_path_mkposix(file_utf8);
		git_buf_attach(path, file_utf8, 0);
	}

cleanup:
	git__free(file_utf16);
	return error;
}
#endif

int git_futils_find_system_file(git_buf *path, const char *filename)
{
#ifdef GIT_WIN32
	struct win32_path root;

	if (win32_expand_path(&root, L"%PROGRAMFILES%\\Git\\etc\\") < 0 ||
		root.path[0] == L'%') /* i.e. no expansion happened */
	{
		giterr_set(GITERR_OS, "Cannot locate the system's Program Files directory");
		return -1;
	}

	if (win32_find_file(path, &root, filename) < 0) {
		git_buf_clear(path);
		return GIT_ENOTFOUND;
	}

	return 0;

#else
	if (git_buf_joinpath(path, "/etc", filename) < 0)
		return -1;

	if (git_path_exists(path->ptr) == true)
		return 0;

	git_buf_clear(path);
	return GIT_ENOTFOUND;
#endif
}

int git_futils_find_global_file(git_buf *path, const char *filename)
{
#ifdef GIT_WIN32
	struct win32_path root;

	if (win32_expand_path(&root, L"%USERPROFILE%\\") < 0 ||
		root.path[0] == L'%') /* i.e. no expansion happened */
	{
		giterr_set(GITERR_OS, "Cannot locate the user's profile directory");
		return -1;
	}

	if (win32_find_file(path, &root, filename) < 0) {
		git_buf_clear(path);
		return GIT_ENOTFOUND;
	}

	return 0;
#else
	const char *home = getenv("HOME");

	if (home == NULL) {
		giterr_set(GITERR_OS, "Global file lookup failed. "
			"Cannot locate the user's home directory");
		return -1;
	}

	if (git_buf_joinpath(path, home, filename) < 0)
		return -1;

	if (git_path_exists(path->ptr) == false) {
		git_buf_clear(path);
		return GIT_ENOTFOUND;
	}

	return 0;
#endif
}
Commit	Line	Data
bb742ede	1	/*
5e0de328	2	* Copyright (C) 2009-2012 the libgit2 contributors
bb742ede VM	3	*
	4	* This file is part of libgit2, distributed under the GNU GPL v2 with
	5	* a Linking Exception. For full terms see the included COPYING file.
	6	*/
5ee2fe77	7	#include "common.h"
ec250c6e	8	#include "fileops.h"
2e29957a	9	#include <ctype.h>
ec250c6e	10
ce8cd006	11	int git_futils_mkpath2file(const char *file_path, const mode_t mode)
55ffebe3	12	{
1a481123	13	int result = 0;
97769280	14	git_buf target_folder = GIT_BUF_INIT;
55ffebe3	15
1a481123 VM	16	if (git_path_dirname_r(&target_folder, file_path) < 0)
1a481123 VM	17	return -1;
55ffebe3 VM	18
55ffebe3 VM	19	/* Does the containing folder exist? */
1a481123	20	if (git_path_isdir(target_folder.ptr) == false)
55ffebe3	21	/* Let's create the tree structure */
1a481123	22	result = git_futils_mkdir_r(target_folder.ptr, NULL, mode);
55ffebe3	23
97769280	24	git_buf_free(&target_folder);
1a481123	25	return result;
55ffebe3 VM	26	}
55ffebe3 VM	27
97769280	28	int git_futils_mktmp(git_buf path_out, const char filename)
72a3fe42 VM	29	{
	30	int fd;
	31
97769280 RB	32	git_buf_sets(path_out, filename);
	33	git_buf_puts(path_out, "_git2_XXXXXX");
	34
	35	if (git_buf_oom(path_out))
1a481123	36	return -1;
72a3fe42	37
1a481123 VM	38	if ((fd = p_mkstemp(path_out->ptr)) < 0) {
1a481123 VM	39	giterr_set(GITERR_OS,
ae9e29fd	40	"Failed to create temporary file '%s'", path_out->ptr);
1a481123 VM	41	return -1;
1a481123 VM	42	}
72a3fe42	43
f978b748	44	return fd;
72a3fe42 VM	45	}
72a3fe42 VM	46
ce8cd006	47	int git_futils_creat_withpath(const char *path, const mode_t dirmode, const mode_t mode)
7dd8a9f7	48	{
1a481123	49	int fd;
55ffebe3	50
1a481123 VM	51	if (git_futils_mkpath2file(path, dirmode) < 0)
	52	return -1;
	53
	54	fd = p_creat(path, mode);
	55	if (fd < 0) {
ae9e29fd	56	giterr_set(GITERR_OS, "Failed to create file '%s'", path);
1a481123 VM	57	return -1;
	58	}
	59
	60	return fd;
55ffebe3 VM	61	}
55ffebe3 VM	62
33127043	63	int git_futils_creat_locked(const char *path, const mode_t mode)
1549cba9	64	{
09719c50	65	int fd;
	66
	67	#ifdef GIT_WIN32
	68	wchar_t* buf;
	69
	70	buf = gitwin_to_utf16(path);
	71	fd = _wopen(buf, O_WRONLY \| O_CREAT \| O_TRUNC \| O_BINARY \| O_EXCL, mode);
	72	git__free(buf);
	73	#else
	74	fd = open(path, O_WRONLY \| O_CREAT \| O_TRUNC \| O_BINARY \| O_EXCL, mode);
	75	#endif
	76
1a481123	77	if (fd < 0) {
ae9e29fd	78	giterr_set(GITERR_OS, "Failed to create locked file '%s'", path);
1a481123 VM	79	return -1;
	80	}
	81
	82	return fd;
1549cba9 RG	83	}
1549cba9 RG	84
ce8cd006	85	int git_futils_creat_locked_withpath(const char *path, const mode_t dirmode, const mode_t mode)
1549cba9	86	{
1a481123 VM	87	if (git_futils_mkpath2file(path, dirmode) < 0)
1a481123 VM	88	return -1;
1549cba9	89
f79026b4	90	return git_futils_creat_locked(path, mode);
ec250c6e AE	91	}
ec250c6e AE	92
deafee7b RB	93	int git_futils_open_ro(const char *path)
	94	{
	95	int fd = p_open(path, O_RDONLY);
	96	if (fd < 0) {
d0a920a6	97	if (errno == ENOENT \|\| errno == ENOTDIR)
deafee7b RB	98	fd = GIT_ENOTFOUND;
	99	giterr_set(GITERR_OS, "Failed to open '%s'", path);
	100	}
	101	return fd;
	102	}
	103
f79026b4	104	git_off_t git_futils_filesize(git_file fd)
ec250c6e	105	{
7dd8a9f7	106	struct stat sb;
deafee7b RB	107
	108	if (p_fstat(fd, &sb)) {
	109	giterr_set(GITERR_OS, "Failed to stat file descriptor");
	110	return -1;
	111	}
5ad739e8	112
ec250c6e AE	113	return sb.st_size;
ec250c6e AE	114	}
4188d28f	115
b6c93aef RB	116	mode_t git_futils_canonical_mode(mode_t raw_mode)
	117	{
	118	if (S_ISREG(raw_mode))
	119	return S_IFREG \| GIT_CANONICAL_PERMS(raw_mode);
	120	else if (S_ISLNK(raw_mode))
	121	return S_IFLNK;
b6c93aef RB	122	else if (S_ISGITLINK(raw_mode))
b6c93aef RB	123	return S_IFGITLINK;
7c7ff7d1 RB	124	else if (S_ISDIR(raw_mode))
7c7ff7d1 RB	125	return S_IFDIR;
b6c93aef RB	126	else
	127	return 0;
	128	}
	129
13224ea4	130	int git_futils_readbuffer_updated(git_buf buf, const char path, time_t mtime, int updated)
75d58430 RJ	131	{
75d58430 RJ	132	git_file fd;
90d4d2f0	133	size_t len;
c3da9f06	134	struct stat st;
75d58430	135
13224ea4	136	assert(buf && path && *path);
75d58430	137
c3da9f06 CMN	138	if (updated != NULL)
c3da9f06 CMN	139	*updated = 0;
75d58430	140
ae9e29fd RB	141	if ((fd = git_futils_open_ro(path)) < 0)
ae9e29fd RB	142	return fd;
c3da9f06	143
13224ea4	144	if (p_fstat(fd, &st) < 0 \|\| S_ISDIR(st.st_mode) \|\| !git__is_sizet(st.st_size+1)) {
e1de726c	145	p_close(fd);
1a481123 VM	146	giterr_set(GITERR_OS, "Invalid regular file stat for '%s'", path);
1a481123 VM	147	return -1;
13224ea4	148	}
c3da9f06 CMN	149
	150	/*
	151	* If we were given a time, we only want to read the file if it
	152	* has been modified.
	153	*/
13224ea4	154	if (mtime != NULL && *mtime >= st.st_mtime) {
e1de726c	155	p_close(fd);
13224ea4 VM	156	return 0;
13224ea4 VM	157	}
c3da9f06 CMN	158
	159	if (mtime != NULL)
	160	*mtime = st.st_mtime;
c3da9f06 CMN	161
	162	len = (size_t) st.st_size;
	163
13224ea4	164	git_buf_clear(buf);
90d4d2f0	165
13224ea4	166	if (git_buf_grow(buf, len + 1) < 0) {
e1de726c RB	167	p_close(fd);
e1de726c RB	168	return -1;
75d58430 RJ	169	}
75d58430 RJ	170
13224ea4 VM	171	buf->ptr[len] = '\0';
	172
	173	while (len > 0) {
	174	ssize_t read_size = p_read(fd, buf->ptr, len);
	175
	176	if (read_size < 0) {
e1de726c	177	p_close(fd);
ae9e29fd	178	giterr_set(GITERR_OS, "Failed to read descriptor for '%s'", path);
1a481123	179	return -1;
13224ea4 VM	180	}
	181
	182	len -= read_size;
	183	buf->size += read_size;
75d58430 RJ	184	}
75d58430 RJ	185
f79026b4	186	p_close(fd);
75d58430	187
c3da9f06 CMN	188	if (updated != NULL)
	189	*updated = 1;
	190
13224ea4	191	return 0;
c3da9f06 CMN	192	}
c3da9f06 CMN	193
13224ea4	194	int git_futils_readbuffer(git_buf buf, const char path)
97769280	195	{
13224ea4	196	return git_futils_readbuffer_updated(buf, path, NULL, NULL);
97769280 RB	197	}
97769280 RB	198
ce8cd006	199	int git_futils_mv_withpath(const char from, const char to, const mode_t dirmode)
19a30a3f	200	{
deafee7b RB	201	if (git_futils_mkpath2file(to, dirmode) < 0)
deafee7b RB	202	return -1;
19a30a3f	203
deafee7b RB	204	if (p_rename(from, to) < 0) {
	205	giterr_set(GITERR_OS, "Failed to rename '%s' to '%s'", from, to);
	206	return -1;
	207	}
	208
	209	return 0;
19a30a3f VM	210	}
19a30a3f VM	211
f79026b4	212	int git_futils_mmap_ro(git_map *out, git_file fd, git_off_t begin, size_t len)
20e7f426	213	{
f79026b4	214	return p_mmap(out, len, GIT_PROT_READ, GIT_MAP_SHARED, fd, begin);
20e7f426 SP	215	}
20e7f426 SP	216
74fa4bfa RB	217	int git_futils_mmap_ro_file(git_map out, const char path)
74fa4bfa RB	218	{
0d0fa7c3 RB	219	git_file fd = git_futils_open_ro(path);
0d0fa7c3 RB	220	git_off_t len;
da9abdd6	221	int result;
0d0fa7c3 RB	222
	223	if (fd < 0)
	224	return fd;
	225
	226	len = git_futils_filesize(fd);
deafee7b RB	227	if (!git__is_sizet(len)) {
	228	giterr_set(GITERR_OS, "File `%s` too large to mmap", path);
	229	return -1;
	230	}
0d0fa7c3	231
da9abdd6	232	result = git_futils_mmap_ro(out, fd, 0, (size_t)len);
74fa4bfa RB	233	p_close(fd);
	234	return result;
	235	}
	236
f79026b4	237	void git_futils_mmap_free(git_map *out)
20e7f426	238	{
f79026b4	239	p_munmap(out);
20e7f426 SP	240	}
20e7f426 SP	241
97769280	242	int git_futils_mkdir_r(const char path, const char base, const mode_t mode)
1a5204a7	243	{
97769280	244	git_buf make_path = GIT_BUF_INIT;
dc07184f	245	size_t start = 0;
40c44d2f	246	char pp, sp;
cb8a7961	247	bool failed = false;
f0b2bfe5	248
97769280	249	if (base != NULL) {
dc07184f	250	/*
	251	* when a base is being provided, it is supposed to already exist.
	252	* Therefore, no attempt is being made to recursively create this leading path
	253	* segment. It's just skipped. */
97769280	254	start = strlen(base);
cb8a7961 VM	255	if (git_buf_joinpath(&make_path, base, path) < 0)
cb8a7961 VM	256	return -1;
97769280	257	} else {
dc07184f	258	int root_path_offset;
dc07184f	259
cb8a7961 VM	260	if (git_buf_puts(&make_path, path) < 0)
cb8a7961 VM	261	return -1;
dc07184f	262
	263	root_path_offset = git_path_root(make_path.ptr);
	264	if (root_path_offset > 0) {
	265	/*
	266	* On Windows, will skip the drive name (eg. C: or D:)
	267	* or the leading part of a network path (eg. //computer_name ) */
	268	start = root_path_offset;
	269	}
97769280	270	}
f0b2bfe5	271
97769280	272	pp = make_path.ptr + start;
40c44d2f	273
cb8a7961	274	while (!failed && (sp = strchr(pp, '/')) != NULL) {
1a481123	275	if (sp != pp && git_path_isdir(make_path.ptr) == false) {
d5f25204	276	*sp = 0;
412de9a6	277
412de9a6	278	/* Do not choke while trying to recreate an existing directory */
cb8a7961 VM	279	if (p_mkdir(make_path.ptr, mode) < 0 && errno != EEXIST)
cb8a7961 VM	280	failed = true;
412de9a6	281
d5f25204 VM	282	*sp = '/';
d5f25204 VM	283	}
40c44d2f	284
d5f25204 VM	285	pp = sp + 1;
d5f25204 VM	286	}
f0b2bfe5	287
cb8a7961 VM	288	if (*pp != '\0' && !failed) {
	289	if (p_mkdir(make_path.ptr, mode) < 0 && errno != EEXIST)
	290	failed = true;
a993e4fe	291	}
40c44d2f	292
97769280	293	git_buf_free(&make_path);
77c3999c	294
cb8a7961 VM	295	if (failed) {
	296	giterr_set(GITERR_OS,
	297	"Failed to create directory structure at '%s'", path);
	298	return -1;
	299	}
77c3999c	300
cb8a7961	301	return 0;
170d3f2f	302	}
170d3f2f	303
97769280	304	static int _rmdir_recurs_foreach(void opaque, git_buf path)
42b3a460	305	{
1a2b8725	306	git_directory_removal_type removal_type = (git_directory_removal_type )opaque;
555aa453	307
	308	assert(removal_type == GIT_DIRREMOVAL_EMPTY_HIERARCHY
	309	\|\| removal_type == GIT_DIRREMOVAL_FILES_AND_DIRS
	310	\|\| removal_type == GIT_DIRREMOVAL_ONLY_EMPTY_DIRS);
42b3a460	311
1a481123	312	if (git_path_isdir(path->ptr) == true) {
deafee7b RB	313	if (git_path_direach(path, _rmdir_recurs_foreach, opaque) < 0)
	314	return -1;
	315
	316	if (p_rmdir(path->ptr) < 0) {
54bdc64a	317	if (removal_type == GIT_DIRREMOVAL_ONLY_EMPTY_DIRS && (errno == ENOTEMPTY \|\| errno == EEXIST))
555aa453	318	return 0;
555aa453	319
deafee7b RB	320	giterr_set(GITERR_OS, "Could not remove directory '%s'", path->ptr);
	321	return -1;
	322	}
42b3a460	323
deafee7b	324	return 0;
858dba58 VM	325	}
858dba58 VM	326
555aa453	327	if (removal_type == GIT_DIRREMOVAL_FILES_AND_DIRS) {
deafee7b RB	328	if (p_unlink(path->ptr) < 0) {
	329	giterr_set(GITERR_OS, "Could not remove directory. File '%s' cannot be removed", path->ptr);
	330	return -1;
	331	}
	332
	333	return 0;
	334	}
	335
555aa453	336	if (removal_type == GIT_DIRREMOVAL_EMPTY_HIERARCHY) {
	337	giterr_set(GITERR_OS, "Could not remove directory. File '%s' still present", path->ptr);
	338	return -1;
	339	}
	340
	341	return 0;
42b3a460 MS	342	}
42b3a460 MS	343
1a2b8725	344	int git_futils_rmdir_r(const char *path, git_directory_removal_type removal_type)
42b3a460	345	{
97769280 RB	346	int error;
	347	git_buf p = GIT_BUF_INIT;
	348
	349	error = git_buf_sets(&p, path);
deafee7b	350	if (!error)
555aa453	351	error = _rmdir_recurs_foreach(&removal_type, &p);
97769280 RB	352	git_buf_free(&p);
97769280 RB	353	return error;
42b3a460 MS	354	}
42b3a460 MS	355
23059130	356	#ifdef GIT_WIN32
349fb6d7 VM	357	struct win32_path {
349fb6d7 VM	358	wchar_t path[MAX_PATH];
73b51450	359	DWORD len;
349fb6d7	360	};
73b51450	361
349fb6d7	362	static int win32_expand_path(struct win32_path s_root, const wchar_t templ)
73b51450	363	{
349fb6d7 VM	364	s_root->len = ExpandEnvironmentStringsW(templ, s_root->path, MAX_PATH);
349fb6d7 VM	365	return s_root->len ? 0 : -1;
73b51450 RB	366	}
73b51450 RB	367
349fb6d7	368	static int win32_find_file(git_buf path, const struct win32_path root, const char *filename)
73b51450	369	{
deafee7b	370	int error = 0;
73b51450	371	size_t len;
349fb6d7	372	wchar_t *file_utf16 = NULL;
73b51450 RB	373	char *file_utf8 = NULL;
	374
	375	if (!root \|\| !filename \|\| (len = strlen(filename)) == 0)
	376	return GIT_ENOTFOUND;
	377
	378	/* allocate space for wchar_t path to file */
	379	file_utf16 = git__calloc(root->len + len + 2, sizeof(wchar_t));
deafee7b	380	GITERR_CHECK_ALLOC(file_utf16);
73b51450 RB	381
	382	/* append root + '\\' + filename as wchar_t */
	383	memcpy(file_utf16, root->path, root->len * sizeof(wchar_t));
	384
	385	if (filename == '/' \|\| filename == '\\')
	386	filename++;
	387
	388	if (gitwin_append_utf16(file_utf16 + root->len - 1, filename, len + 1) !=
f46e6226	389	(int)len + 1) {
deafee7b	390	error = -1;
73b51450 RB	391	goto cleanup;
	392	}
	393
73b51450 RB	394	/* check access */
	395	if (_waccess(file_utf16, F_OK) < 0) {
	396	error = GIT_ENOTFOUND;
	397	goto cleanup;
	398	}
	399
	400	/* convert to utf8 */
	401	if ((file_utf8 = gitwin_from_utf16(file_utf16)) == NULL)
deafee7b RB	402	error = -1;
deafee7b RB	403	else {
73b51450 RB	404	git_path_mkposix(file_utf8);
	405	git_buf_attach(path, file_utf8, 0);
	406	}
	407
	408	cleanup:
	409	git__free(file_utf16);
73b51450 RB	410	return error;
	411	}
	412	#endif
	413
	414	int git_futils_find_system_file(git_buf path, const char filename)
	415	{
349fb6d7 VM	416	#ifdef GIT_WIN32
349fb6d7 VM	417	struct win32_path root;
9cde607c	418
349fb6d7	419	if (win32_expand_path(&root, L"%PROGRAMFILES%\\Git\\etc\\") < 0 \|\|
29ef309e RB	420	root.path[0] == L'%') /* i.e. no expansion happened */
	421	{
	422	giterr_set(GITERR_OS, "Cannot locate the system's Program Files directory");
349fb6d7 VM	423	return -1;
	424	}
	425
29ef309e RB	426	if (win32_find_file(path, &root, filename) < 0) {
	427	git_buf_clear(path);
	428	return GIT_ENOTFOUND;
	429	}
	430
349fb6d7 VM	431	return 0;
	432
	433	#else
cb8a7961 VM	434	if (git_buf_joinpath(path, "/etc", filename) < 0)
cb8a7961 VM	435	return -1;
73b51450	436
1a481123	437	if (git_path_exists(path->ptr) == true)
deafee7b	438	return 0;
73b51450 RB	439
73b51450 RB	440	git_buf_clear(path);
349fb6d7 VM	441	return GIT_ENOTFOUND;
	442	#endif
	443	}
73b51450	444
349fb6d7 VM	445	int git_futils_find_global_file(git_buf path, const char filename)
349fb6d7 VM	446	{
73b51450	447	#ifdef GIT_WIN32
349fb6d7 VM	448	struct win32_path root;
	449
	450	if (win32_expand_path(&root, L"%USERPROFILE%\\") < 0 \|\|
29ef309e RB	451	root.path[0] == L'%') /* i.e. no expansion happened */
	452	{
	453	giterr_set(GITERR_OS, "Cannot locate the user's profile directory");
349fb6d7 VM	454	return -1;
	455	}
	456
29ef309e RB	457	if (win32_find_file(path, &root, filename) < 0) {
	458	git_buf_clear(path);
	459	return GIT_ENOTFOUND;
	460	}
	461
349fb6d7	462	return 0;
73b51450	463	#else
349fb6d7 VM	464	const char *home = getenv("HOME");
	465
	466	if (home == NULL) {
	467	giterr_set(GITERR_OS, "Global file lookup failed. "
	468	"Cannot locate the user's home directory");
	469	return -1;
	470	}
	471
	472	if (git_buf_joinpath(path, home, filename) < 0)
	473	return -1;
	474
	475	if (git_path_exists(path->ptr) == false) {
	476	git_buf_clear(path);
	477	return GIT_ENOTFOUND;
	478	}
	479
	480	return 0;
73b51450 RB	481	#endif
73b51450 RB	482	}