int git_refspec_transform(char *out, size_t outlen, const git_refspec *spec, const char *name)
{
size_t baselen, namelen;
baselen = strlen(spec->dst);
if (outlen <= baselen)
return git__throw(GIT_EINVALIDREFNAME, "Reference name too long");
/*
* No '*' at the end means that it's mapped to one specific local
* branch, so no actual transformation is needed.
*/
if (spec->dst[baselen - 1] != '*') {
memcpy(out, spec->dst, baselen + 1); /* include '\0' */
return GIT_SUCCESS;
}
/* There's a '*' at the end, so remove its length */
baselen--;
/* skip the prefix, -1 is for the '*' */
name += strlen(spec->src) - 1;
namelen = strlen(name);
if (outlen <= baselen + namelen)
return git__throw(GIT_EINVALIDREFNAME, "Reference name too long");
memcpy(out, spec->dst, baselen);
memcpy(out + baselen, name, namelen + 1);
return GIT_SUCCESS;
}
int p_munmap(git_map *map)
{
assert(map != NULL);
if (!map)
return git__throw(GIT_ERROR, "Failed to munmap. Map does not exist");
if (map->data) {
if (!UnmapViewOfFile(map->data)) {
/* errno = ? */
CloseHandle(map->fmh);
map->data = NULL;
map->fmh = NULL;
return git__throw(GIT_ERROR, "Failed to munmap. Could not unmap view of file");
}
map->data = NULL;
}
if (map->fmh) {
if (!CloseHandle(map->fmh)) {
/* errno = ? */
map->fmh = NULL;
return git__throw(GIT_ERROR, "Failed to munmap. Could not close handle");
}
map->fmh = NULL;
}
return GIT_SUCCESS;
}
int p_lstat(const char *file_name, struct stat *buf)
{
int namelen, error;
char alt_name[GIT_PATH_MAX];
if ((error = do_lstat(file_name, buf)) == GIT_SUCCESS)
return GIT_SUCCESS;
/* if file_name ended in a '/', Windows returned ENOENT;
* try again without trailing slashes
*/
if (error != GIT_EINVALIDPATH)
return git__throw(GIT_EOSERR, "Failed to lstat file");
namelen = strlen(file_name);
if (namelen && file_name[namelen-1] != '/')
return git__throw(GIT_EOSERR, "Failed to lstat file");
while (namelen && file_name[namelen-1] == '/')
--namelen;
if (!namelen || namelen >= GIT_PATH_MAX)
return git__throw(GIT_ENOMEM, "Failed to lstat file");
memcpy(alt_name, file_name, namelen);
alt_name[namelen] = 0;
return do_lstat(alt_name, buf);
}
static int win32_find_system(char *system_config_path)
{
const wchar_t *query = L"%PROGRAMFILES%\\Git\\etc\\gitconfig";
wchar_t *apphome_utf16;
char *apphome_utf8;
DWORD size, ret;
size = ExpandEnvironmentStringsW(query, NULL, 0);
/* The function gave us the full size of the buffer in chars, including NUL */
apphome_utf16 = git__malloc(size * sizeof(wchar_t));
if (apphome_utf16 == NULL)
return GIT_ENOMEM;
ret = ExpandEnvironmentStringsW(query, apphome_utf16, size);
if (ret != size)
return git__throw(GIT_ERROR, "Failed to expand environment strings");
if (_waccess(apphome_utf16, F_OK) < 0) {
free(apphome_utf16);
return GIT_ENOTFOUND;
}
apphome_utf8 = conv_utf16_to_utf8(apphome_utf16);
free(apphome_utf16);
if (strlen(apphome_utf8) >= GIT_PATH_MAX) {
free(apphome_utf8);
return git__throw(GIT_ESHORTBUFFER, "Path is too long");
}
strcpy(system_config_path, apphome_utf8);
free(apphome_utf8);
return GIT_SUCCESS;
}
int git_futils_readbuffer_updated(git_fbuffer *obj, const char *path, time_t *mtime, int *updated)
{
git_file fd;
size_t len;
struct stat st;
unsigned char *buff;
assert(obj && path && *path);
if (updated != NULL)
*updated = 0;
if (p_stat(path, &st) < 0)
return git__throw(GIT_ENOTFOUND, "Failed to stat file %s", path);
if (S_ISDIR(st.st_mode))
return git__throw(GIT_ERROR, "Can't read a dir into a buffer");
/*
* 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)
return GIT_SUCCESS;
if (mtime != NULL)
*mtime = st.st_mtime;
if (!git__is_sizet(st.st_size+1))
return git__throw(GIT_ERROR, "Failed to read file `%s`. An error occured while calculating its size", path);
len = (size_t) st.st_size;
if ((fd = p_open(path, O_RDONLY)) < 0)
return git__throw(GIT_EOSERR, "Failed to open %s for reading", path);
if ((buff = git__malloc(len + 1)) == NULL) {
p_close(fd);
return GIT_ENOMEM;
}
if (p_read(fd, buff, len) < 0) {
p_close(fd);
free(buff);
return git__throw(GIT_ERROR, "Failed to read file `%s`", path);
}
buff[len] = '\0';
p_close(fd);
if (mtime != NULL)
*mtime = st.st_mtime;
if (updated != NULL)
*updated = 1;
obj->data = buff;
obj->len = len;
return GIT_SUCCESS;
}
static int read_unmerged(git_index *index, const char *buffer, size_t size)
{
const char *endptr;
size_t len;
int i;
git_vector_init(&index->unmerged, 16, unmerged_cmp);
while (size) {
git_index_entry_unmerged *lost;
len = strlen(buffer) + 1;
if (size <= len)
return git__throw(GIT_ERROR, "Failed to read unmerged entries");
if ((lost = git__malloc(sizeof(git_index_entry_unmerged))) == NULL)
return GIT_ENOMEM;
if (git_vector_insert(&index->unmerged, lost) < GIT_SUCCESS)
return git__throw(GIT_ERROR, "Failed to read unmerged entries");
lost->path = git__strdup(buffer);
if (!lost->path)
return GIT_ENOMEM;
size -= len;
buffer += len;
for (i = 0; i < 3; i++) {
long tmp;
if (git__strtol32(&tmp, buffer, &endptr, 8) < GIT_SUCCESS ||
!endptr || endptr == buffer || *endptr || tmp > UINT_MAX)
return GIT_ERROR;
lost->mode[i] = tmp;
len = (endptr + 1) - buffer;
if (size <= len)
return git__throw(GIT_ERROR, "Failed to read unmerged entries");
size -= len;
buffer += len;
}
for (i = 0; i < 3; i++) {
if (!lost->mode[i])
continue;
if (size < 20)
return git__throw(GIT_ERROR, "Failed to read unmerged entries");
git_oid_fromraw(&lost->oid[i], (unsigned char *) buffer);
size -= 20;
buffer += 20;
}
}
return GIT_SUCCESS;
}
/*
* Parse an other-ref line.
*/
int ref_pkt(git_pkt **out, const char *line, size_t len)
{
git_pkt_ref *pkt;
int error, has_caps = 0;
pkt = git__malloc(sizeof(git_pkt_ref));
if (pkt == NULL)
return GIT_ENOMEM;
memset(pkt, 0x0, sizeof(git_pkt_ref));
pkt->type = GIT_PKT_REF;
error = git_oid_fromstr(&pkt->head.oid, line);
if (error < GIT_SUCCESS) {
error = git__throw(error, "Failed to parse reference ID");
goto out;
}
/* Check for a bit of consistency */
if (line[GIT_OID_HEXSZ] != ' ') {
error = git__throw(GIT_EOBJCORRUPTED, "Failed to parse ref. No SP");
goto out;
}
/* Jump from the name */
line += GIT_OID_HEXSZ + 1;
len -= (GIT_OID_HEXSZ + 1);
if (strlen(line) < len)
has_caps = 1;
if (line[len - 1] == '\n')
--len;
pkt->head.name = git__malloc(len + 1);
if (pkt->head.name == NULL) {
error = GIT_ENOMEM;
goto out;
}
memcpy(pkt->head.name, line, len);
pkt->head.name[len] = '\0';
if (has_caps) {
pkt->capabilities = strchr(pkt->head.name, '\0') + 1;
}
out:
if (error < GIT_SUCCESS)
free(pkt);
else
*out = (git_pkt *)pkt;
return error;
}
int git_futils_direach(
char *path,
size_t path_sz,
int (*fn)(void *, char *),
void *arg)
{
size_t wd_len = strlen(path);
DIR *dir;
struct dirent *de;
if (!wd_len || path_sz < wd_len + 2)
return git__throw(GIT_EINVALIDARGS, "Failed to process `%s` tree structure. Path is either empty or buffer size is too short", path);
while (path[wd_len - 1] == '/')
wd_len--;
path[wd_len++] = '/';
path[wd_len] = '\0';
dir = opendir(path);
if (!dir)
return git__throw(GIT_EOSERR, "Failed to process `%s` tree structure. An error occured while opening the directory", path);
while ((de = readdir(dir)) != NULL) {
size_t de_len;
int result;
if (is_dot_or_dotdot(de->d_name))
continue;
de_len = strlen(de->d_name);
if (path_sz < wd_len + de_len + 1) {
closedir(dir);
return git__throw(GIT_ERROR, "Failed to process `%s` tree structure. Buffer size is too short", path);
}
strcpy(path + wd_len, de->d_name);
result = fn(arg, path);
if (result < GIT_SUCCESS) {
closedir(dir);
return result; /* The callee is reponsible for setting the correct error message */
}
if (result > 0) {
closedir(dir);
return result;
}
}
closedir(dir);
return GIT_SUCCESS;
}
static int tree_parse_buffer(git_tree *tree, const char *buffer, const char *buffer_end)
{
int error = GIT_SUCCESS;
if (git_vector_init(&tree->entries, DEFAULT_TREE_SIZE, entry_sort_cmp) < GIT_SUCCESS)
return GIT_ENOMEM;
while (buffer < buffer_end) {
git_tree_entry *entry;
int tmp;
entry = git__calloc(1, sizeof(git_tree_entry));
if (entry == NULL) {
error = GIT_ENOMEM;
break;
}
if (git_vector_insert(&tree->entries, entry) < GIT_SUCCESS)
return GIT_ENOMEM;
if (git__strtol32(&tmp, buffer, &buffer, 8) < GIT_SUCCESS ||
!buffer || !valid_attributes(tmp))
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse tree. Can't parse attributes");
entry->attr = tmp;
if (*buffer++ != ' ') {
error = git__throw(GIT_EOBJCORRUPTED, "Failed to parse tree. Object it corrupted");
break;
}
if (memchr(buffer, 0, buffer_end - buffer) == NULL) {
error = git__throw(GIT_EOBJCORRUPTED, "Failed to parse tree. Object it corrupted");
break;
}
entry->filename = git__strdup(buffer);
entry->filename_len = strlen(buffer);
while (buffer < buffer_end && *buffer != 0)
buffer++;
buffer++;
git_oid_fromraw(&entry->oid, (const unsigned char *)buffer);
buffer += GIT_OID_RAWSZ;
}
return error == GIT_SUCCESS ? GIT_SUCCESS : git__rethrow(error, "Failed to parse buffer");
}
static int write_deflate(git_filebuf *file, const void *source, size_t len)
{
int result = Z_OK;
z_stream *zs = &file->zs;
if (len > 0 || file->flush_mode == Z_FINISH) {
zs->next_in = (void *)source;
zs->avail_in = len;
do {
int have;
zs->next_out = file->z_buf;
zs->avail_out = file->buf_size;
result = deflate(zs, file->flush_mode);
assert(result != Z_STREAM_ERROR);
have = file->buf_size - zs->avail_out;
if (gitfo_write(file->fd, file->z_buf, have) < GIT_SUCCESS)
return git__throw(GIT_EOSERR, "Failed to write to file");
} while (zs->avail_out == 0);
assert(zs->avail_in == 0);
if (file->digest)
git_hash_update(file->digest, source, len);
}
return GIT_SUCCESS;
}
/*
* Close the least recently used window. You should check to see if
* the file descriptors need closing from time to time.
*/
static int git_mwindow_close_lru(git_mwindow_file *mwf)
{
unsigned int i;
git_mwindow *lru_w = NULL, *lru_l = NULL;
/* FIMXE: Does this give us any advantage? */
if(mwf->windows)
git_mwindow_scan_lru(mwf, &lru_w, &lru_l);
for (i = 0; i < ctl.windowfiles.length; ++i) {
git_mwindow_scan_lru(git_vector_get(&ctl.windowfiles, i), &lru_w, &lru_l);
}
if (lru_w) {
git_mwindow_close(&lru_w);
ctl.mapped -= lru_w->window_map.len;
git_futils_mmap_free(&lru_w->window_map);
if (lru_l)
lru_l->next = lru_w->next;
else
mwf->windows = lru_w->next;
free(lru_w);
ctl.open_windows--;
return GIT_SUCCESS;
}
return git__throw(GIT_ERROR, "Failed to close memory window. Couln't find LRU");
}
static int process_trimming(const char *input, char **storage, const char *input_end, int fail_when_empty)
{
const char *left, *right;
int trimmed_input_length;
left = skip_leading_spaces(input, input_end);
right = skip_trailing_spaces(input, input_end - 1);
if (right < left) {
if (fail_when_empty)
return git__throw(GIT_EINVALIDARGS, "Failed to trim. Input is either empty or only contains spaces");
else
right = left - 1;
}
trimmed_input_length = right - left + 1;
*storage = git__malloc(trimmed_input_length + 1);
if (*storage == NULL)
return GIT_ENOMEM;
memcpy(*storage, left, trimmed_input_length);
(*storage)[trimmed_input_length] = 0;
return GIT_SUCCESS;
}
/*
* Moved from `repository.c`
*/
int git_repository_index(git_index **index_out, git_repository *repo)
{
if (repo->is_bare)
return git__throw(GIT_EBAREINDEX, "Failed to open index. Repository is bare");
return index_initialize(index_out, repo, repo->path_index);
}
static int pack_entry_find(struct git_pack_entry *e, struct pack_backend *backend, const git_oid *oid)
{
int error;
size_t i;
if ((error = packfile_refresh_all(backend)) < GIT_SUCCESS)
return git__rethrow(error, "Failed to find pack entry");
if (backend->last_found &&
git_pack_entry_find(e, backend->last_found, oid, GIT_OID_HEXSZ) == GIT_SUCCESS)
return GIT_SUCCESS;
for (i = 0; i < backend->packs.length; ++i) {
struct git_pack_file *p;
p = git_vector_get(&backend->packs, i);
if (p == backend->last_found)
continue;
if (git_pack_entry_find(e, p, oid, GIT_OID_HEXSZ) == GIT_SUCCESS) {
backend->last_found = p;
return GIT_SUCCESS;
}
}
return git__throw(GIT_ENOTFOUND, "Failed to find pack entry");
}
int gitno_extract_host_and_port(char **host, char **port, const char *url, const char *default_port)
{
char *colon, *slash, *delim;
int error = GIT_SUCCESS;
colon = strchr(url, ':');
slash = strchr(url, '/');
if (slash == NULL)
return git__throw(GIT_EOBJCORRUPTED, "Malformed URL: missing /");
if (colon == NULL) {
*port = git__strdup(default_port);
} else {
*port = git__strndup(colon + 1, slash - colon - 1);
}
if (*port == NULL)
return GIT_ENOMEM;;
delim = colon == NULL ? slash : colon;
*host = git__strndup(url, delim - url);
if (*host == NULL) {
git__free(*port);
error = GIT_ENOMEM;
}
return error;
}
int git_refspec_parse(git_refspec *refspec, const char *str)
{
char *delim;
memset(refspec, 0x0, sizeof(git_refspec));
if (*str == '+') {
refspec->force = 1;
str++;
}
delim = strchr(str, ':');
if (delim == NULL)
return git__throw(GIT_EOBJCORRUPTED, "Failed to parse refspec. No ':'");
refspec->src = git__strndup(str, delim - str);
if (refspec->src == NULL)
return GIT_ENOMEM;
refspec->dst = git__strdup(delim + 1);
if (refspec->dst == NULL) {
free(refspec->src);
refspec->src = NULL;
return GIT_ENOMEM;
}
return GIT_SUCCESS;
}
static int packfile_refresh_all(struct pack_backend *backend)
{
int error;
struct stat st;
if (backend->pack_folder == NULL)
return GIT_SUCCESS;
if (p_stat(backend->pack_folder, &st) < 0 || !S_ISDIR(st.st_mode))
return git__throw(GIT_ENOTFOUND, "Failed to refresh packfiles. Backend not found");
if (st.st_mtime != backend->pack_folder_mtime) {
char path[GIT_PATH_MAX];
strcpy(path, backend->pack_folder);
/* reload all packs */
error = git_futils_direach(path, GIT_PATH_MAX, packfile_load__cb, (void *)backend);
if (error < GIT_SUCCESS)
return git__rethrow(error, "Failed to refresh packfiles");
git_vector_sort(&backend->packs);
backend->pack_folder_mtime = st.st_mtime;
}
return GIT_SUCCESS;
}
int git_treebuilder_write(git_oid *oid, git_repository *repo, git_treebuilder *bld)
{
unsigned int i;
int error;
git_buf tree = GIT_BUF_INIT;
assert(bld);
sort_entries(bld);
/* Grow the buffer beforehand to an estimated size */
git_buf_grow(&tree, bld->entries.length * 72);
for (i = 0; i < bld->entries.length; ++i) {
git_tree_entry *entry = bld->entries.contents[i];
if (entry->removed)
continue;
git_buf_printf(&tree, "%o ", entry->attr);
git_buf_put(&tree, entry->filename, entry->filename_len + 1);
git_buf_put(&tree, (char *)entry->oid.id, GIT_OID_RAWSZ);
}
if (git_buf_oom(&tree)) {
git_buf_free(&tree);
return git__throw(GIT_ENOMEM, "Not enough memory to build the tree data");
}
error = git_odb_write(oid, git_repository_database(repo), tree.ptr, tree.size, GIT_OBJ_TREE);
git_buf_free(&tree);
return error == GIT_SUCCESS ? GIT_SUCCESS : git__rethrow(error, "Failed to write tree");
}
int git_futils_creat_locked_withpath(const char *path, int mode)
{
if (git_futils_mkpath2file(path) < GIT_SUCCESS)
return git__throw(GIT_EOSERR, "Failed to create locked file %s", path);
return git_futils_creat_locked(path, mode);
}
int git_config_get_int64(git_config *cfg, const char *name, int64_t *out)
{
const char *value, *num_end;
int ret;
int64_t num;
ret = git_config_get_string(cfg, name, &value);
if (ret < GIT_SUCCESS)
return git__rethrow(ret, "Failed to retrieve value for '%s'", name);
ret = git__strtol64(&num, value, &num_end, 0);
if (ret < GIT_SUCCESS)
return git__rethrow(ret, "Failed to convert value for '%s'", name);
switch (*num_end) {
case 'g':
case 'G':
num *= 1024;
/* fallthrough */
case 'm':
case 'M':
num *= 1024;
/* fallthrough */
case 'k':
case 'K':
num *= 1024;
/* check that that there are no more characters after the
* given modifier suffix */
if (num_end[1] != '\0')
return git__throw(GIT_EINVALIDTYPE,
"Failed to get value for '%s'. Invalid type suffix", name);
/* fallthrough */
case '\0':
*out = num;
return GIT_SUCCESS;
default:
return git__throw(GIT_EINVALIDTYPE,
"Failed to get value for '%s'. Value is of invalid type", name);
}
}
static int filter_wants(git_remote *remote)
{
git_vector list;
git_headarray refs;
git_transport *t = remote->transport;
git_repository *repo = remote->repo;
const git_refspec *spec;
int error;
unsigned int i;
error = git_vector_init(&list, 16, NULL);
if (error < GIT_SUCCESS)
return error;
error = t->ls(t, &refs);
if (error < GIT_SUCCESS) {
error = git__rethrow(error, "Failed to get remote ref list");
goto cleanup;
}
spec = git_remote_fetchspec(remote);
if (spec == NULL) {
error = git__throw(GIT_ERROR, "The remote has no fetchspec");
goto cleanup;
}
for (i = 0; i < refs.len; ++i) {
git_remote_head *head = refs.heads[i];
/* If it doesn't match the refpec, we don't want it */
error = git_refspec_src_match(spec, head->name);
if (error == GIT_ENOMATCH)
continue;
if (error < GIT_SUCCESS) {
error = git__rethrow(error, "Error matching remote ref name");
goto cleanup;
}
/* If we have the object, mark it so we don't ask for it */
if (git_odb_exists(repo->db, &head->oid))
head->local = 1;
else
remote->need_pack = 1;
error = git_vector_insert(&list, head);
if (error < GIT_SUCCESS)
goto cleanup;
}
remote->refs.len = list.length;
remote->refs.heads = (git_remote_head **) list.contents;
return GIT_SUCCESS;
cleanup:
git_vector_free(&list);
return error;
}
int git_vector_bsearch2(git_vector *v, git_vector_cmp key_lookup, const void *key)
{
void **find;
assert(v && key && key_lookup);
/* need comparison function to sort the vector */
if (v->_cmp == NULL)
return git__throw(GIT_ENOTFOUND, "Can't sort vector. No comparison function set");
git_vector_sort(v);
find = git__bsearch(key, v->contents, v->length, key_lookup);
if (find != NULL)
return (int)(find - v->contents);
return git__throw(GIT_ENOTFOUND, "Can't find element");
}
int git_treebuilder_insert(git_tree_entry **entry_out, git_treebuilder *bld, const char *filename, const git_oid *id, unsigned int attributes)
{
git_tree_entry *entry;
int pos;
struct tree_key_search ksearch;
assert(bld && id && filename);
if (!valid_attributes(attributes))
return git__throw(GIT_ERROR, "Failed to insert entry. Invalid attributes");
if (build_ksearch(&ksearch, filename) < GIT_SUCCESS)
return git__throw(GIT_ERROR, "Failed to insert entry. Invalid filename '%s'", filename);
if ((pos = git_vector_bsearch2(&bld->entries, entry_search_cmp, &ksearch)) != GIT_ENOTFOUND) {
entry = git_vector_get(&bld->entries, pos);
if (entry->removed) {
entry->removed = 0;
bld->entry_count++;
}
} else {
if ((entry = git__malloc(sizeof(git_tree_entry))) == NULL)
return GIT_ENOMEM;
memset(entry, 0x0, sizeof(git_tree_entry));
entry->filename = git__strdup(filename);
entry->filename_len = strlen(entry->filename);
bld->entry_count++;
}
git_oid_cpy(&entry->oid, id);
entry->attr = attributes;
if (pos == GIT_ENOTFOUND) {
if (git_vector_insert(&bld->entries, entry) < 0)
return GIT_ENOMEM;
}
if (entry_out != NULL)
*entry_out = entry;
return GIT_SUCCESS;
}
int git_config_get_string(git_config *cfg, const char *name, const char **out)
{
file_internal *internal;
git_config_file *file;
int error = GIT_ENOTFOUND;
unsigned int i;
if (cfg->files.length == 0)
return git__throw(GIT_EINVALIDARGS, "Cannot get variable value; no files open in the `git_config` instance");
for (i = 0; i < cfg->files.length; ++i) {
internal = git_vector_get(&cfg->files, i);
file = internal->file;
if ((error = file->get(file, name, out)) == GIT_SUCCESS)
return GIT_SUCCESS;
}
return git__throw(error, "Config value '%s' not found", name);
}
int git_treebuilder_remove(git_treebuilder *bld, const char *filename)
{
git_tree_entry *remove_ptr = treebuilder_get(bld, filename);
if (remove_ptr == NULL || remove_ptr->removed)
return git__throw(GIT_ENOTFOUND, "Failed to remove entry. File isn't in the tree");
remove_ptr->removed = 1;
bld->entry_count--;
return GIT_SUCCESS;
}
int p_munmap(git_map *map)
{
assert(map != NULL);
if (!map)
return git__throw(GIT_ERROR, "Failed to munmap. Map does not exist");
munmap(map->data, map->len);
return GIT_SUCCESS;
}
int git_commit_parent(git_commit **parent, git_commit *commit, unsigned int n)
{
git_oid *parent_oid;
assert(commit);
parent_oid = git_vector_get(&commit->parent_oids, n);
if (parent_oid == NULL)
return git__throw(GIT_ENOTFOUND, "Parent %u does not exist", n);
return git_commit_lookup(parent, commit->object.repo, parent_oid);
}
int p_mmap(git_map *out, size_t len, int prot, int flags, int fd, git_off_t offset)
{
int mprot = 0;
int mflag = 0;
assert((out != NULL) && (len > 0));
if ((out == NULL) || (len == 0)) {
errno = EINVAL;
return git__throw(GIT_ERROR, "Failed to mmap. No map or zero length");
}
out->data = NULL;
out->len = 0;
if (prot & GIT_PROT_WRITE)
mprot = PROT_WRITE;
else if (prot & GIT_PROT_READ)
mprot = PROT_READ;
else {
errno = EINVAL;
return git__throw(GIT_ERROR, "Failed to mmap. Invalid protection parameters");
}
if ((flags & GIT_MAP_TYPE) == GIT_MAP_SHARED)
mflag = MAP_SHARED;
else if ((flags & GIT_MAP_TYPE) == GIT_MAP_PRIVATE)
mflag = MAP_PRIVATE;
if (flags & GIT_MAP_FIXED) {
errno = EINVAL;
return git__throw(GIT_ERROR, "Failed to mmap. FIXED not set");
}
out->data = mmap(NULL, len, mprot, mflag, fd, offset);
if (!out->data || out->data == MAP_FAILED)
return git__throw(GIT_EOSERR, "Failed to mmap. Could not write data");
out->len = len;
return GIT_SUCCESS;
}
int git_futils_mktmp(char *path_out, const char *filename)
{
int fd;
strcpy(path_out, filename);
strcat(path_out, "_git2_XXXXXX");
if ((fd = p_mkstemp(path_out)) < 0)
return git__throw(GIT_EOSERR, "Failed to create temporary file %s", path_out);
return fd;
}
int git_config_find_global(char *global_config_path)
{
const char *home;
home = getenv("HOME");
#ifdef GIT_WIN32
if (home == NULL)
home = getenv("USERPROFILE");
#endif
if (home == NULL)
return git__throw(GIT_EOSERR, "Failed to open global config file. Cannot locate the user's home directory");
git_path_join(global_config_path, home, GIT_CONFIG_FILENAME);
if (git_futils_exists(global_config_path) < GIT_SUCCESS)
return git__throw(GIT_EOSERR, "Failed to open global config file. The file does not exist");
return GIT_SUCCESS;
}