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Commit | Line | Data |
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12dccc16 LT |
1 | #include <sys/types.h> |
2 | #include <dirent.h> | |
3 | #include "cache.h" | |
8e440259 | 4 | #include "blob.h" |
12dccc16 LT |
5 | |
6 | static void create_directories(const char *path, struct checkout *state) | |
7 | { | |
8 | int len = strlen(path); | |
9 | char *buf = xmalloc(len + 1); | |
10 | const char *slash = path; | |
11 | ||
12 | while ((slash = strchr(slash+1, '/')) != NULL) { | |
13 | len = slash - path; | |
14 | memcpy(buf, path, len); | |
15 | buf[len] = 0; | |
f312de01 | 16 | if (mkdir(buf, 0777)) { |
12dccc16 LT |
17 | if (errno == EEXIST) { |
18 | struct stat st; | |
f312de01 | 19 | if (len > state->base_dir_len && state->force && !unlink(buf) && !mkdir(buf, 0777)) |
12dccc16 LT |
20 | continue; |
21 | if (!stat(buf, &st) && S_ISDIR(st.st_mode)) | |
22 | continue; /* ok */ | |
23 | } | |
24 | die("cannot create directory at %s", buf); | |
25 | } | |
26 | } | |
27 | free(buf); | |
28 | } | |
29 | ||
30 | static void remove_subtree(const char *path) | |
31 | { | |
32 | DIR *dir = opendir(path); | |
33 | struct dirent *de; | |
34 | char pathbuf[PATH_MAX]; | |
35 | char *name; | |
36 | ||
37 | if (!dir) | |
38 | die("cannot opendir %s", path); | |
39 | strcpy(pathbuf, path); | |
40 | name = pathbuf + strlen(path); | |
41 | *name++ = '/'; | |
42 | while ((de = readdir(dir)) != NULL) { | |
43 | struct stat st; | |
44 | if ((de->d_name[0] == '.') && | |
45 | ((de->d_name[1] == 0) || | |
46 | ((de->d_name[1] == '.') && de->d_name[2] == 0))) | |
47 | continue; | |
48 | strcpy(name, de->d_name); | |
49 | if (lstat(pathbuf, &st)) | |
50 | die("cannot lstat %s", pathbuf); | |
51 | if (S_ISDIR(st.st_mode)) | |
52 | remove_subtree(pathbuf); | |
53 | else if (unlink(pathbuf)) | |
54 | die("cannot unlink %s", pathbuf); | |
55 | } | |
56 | closedir(dir); | |
57 | if (rmdir(path)) | |
58 | die("cannot rmdir %s", path); | |
59 | } | |
60 | ||
d48a72f3 | 61 | static int create_file(const char *path, unsigned int mode) |
12dccc16 | 62 | { |
12dccc16 | 63 | mode = (mode & 0100) ? 0777 : 0666; |
781411ed | 64 | return open(path, O_WRONLY | O_CREAT | O_EXCL, mode); |
12dccc16 LT |
65 | } |
66 | ||
de84f99c | 67 | static int write_entry(struct cache_entry *ce, char *path, struct checkout *state, int to_tempfile) |
12dccc16 LT |
68 | { |
69 | int fd; | |
70 | void *new; | |
71 | unsigned long size; | |
72 | long wrote; | |
73 | char type[20]; | |
12dccc16 LT |
74 | |
75 | new = read_sha1_file(ce->sha1, type, &size); | |
8e440259 | 76 | if (!new || strcmp(type, blob_type)) { |
12dccc16 LT |
77 | if (new) |
78 | free(new); | |
215a7ad1 | 79 | return error("git-checkout-index: unable to read sha1 file of %s (%s)", |
12dccc16 LT |
80 | path, sha1_to_hex(ce->sha1)); |
81 | } | |
82 | switch (ntohl(ce->ce_mode) & S_IFMT) { | |
83 | case S_IFREG: | |
de84f99c SP |
84 | if (to_tempfile) { |
85 | strcpy(path, ".merge_file_XXXXXX"); | |
86 | fd = mkstemp(path); | |
87 | } else | |
88 | fd = create_file(path, ntohl(ce->ce_mode)); | |
12dccc16 LT |
89 | if (fd < 0) { |
90 | free(new); | |
215a7ad1 | 91 | return error("git-checkout-index: unable to create file %s (%s)", |
12dccc16 LT |
92 | path, strerror(errno)); |
93 | } | |
94 | wrote = write(fd, new, size); | |
95 | close(fd); | |
96 | free(new); | |
97 | if (wrote != size) | |
215a7ad1 | 98 | return error("git-checkout-index: unable to write file %s", path); |
12dccc16 LT |
99 | break; |
100 | case S_IFLNK: | |
de84f99c SP |
101 | if (to_tempfile) { |
102 | strcpy(path, ".merge_link_XXXXXX"); | |
103 | fd = mkstemp(path); | |
104 | if (fd < 0) { | |
105 | free(new); | |
106 | return error("git-checkout-index: unable to create " | |
107 | "file %s (%s)", path, strerror(errno)); | |
108 | } | |
109 | wrote = write(fd, new, size); | |
110 | close(fd); | |
111 | free(new); | |
112 | if (wrote != size) | |
113 | return error("git-checkout-index: unable to write file %s", | |
114 | path); | |
115 | } else { | |
116 | wrote = symlink(new, path); | |
12dccc16 | 117 | free(new); |
de84f99c SP |
118 | if (wrote) |
119 | return error("git-checkout-index: unable to create " | |
120 | "symlink %s (%s)", path, strerror(errno)); | |
12dccc16 | 121 | } |
12dccc16 LT |
122 | break; |
123 | default: | |
124 | free(new); | |
215a7ad1 | 125 | return error("git-checkout-index: unknown file mode for %s", path); |
12dccc16 LT |
126 | } |
127 | ||
6ee67f26 | 128 | if (state->refresh_cache) { |
12dccc16 LT |
129 | struct stat st; |
130 | lstat(ce->name, &st); | |
131 | fill_stat_cache_info(ce, &st); | |
132 | } | |
133 | return 0; | |
134 | } | |
135 | ||
de84f99c | 136 | int checkout_entry(struct cache_entry *ce, struct checkout *state, char *topath) |
12dccc16 | 137 | { |
095c424d | 138 | static char path[PATH_MAX + 1]; |
de84f99c | 139 | struct stat st; |
12dccc16 LT |
140 | int len = state->base_dir_len; |
141 | ||
de84f99c SP |
142 | if (topath) |
143 | return write_entry(ce, topath, state, 1); | |
144 | ||
12dccc16 LT |
145 | memcpy(path, state->base_dir, len); |
146 | strcpy(path + len, ce->name); | |
147 | ||
148 | if (!lstat(path, &st)) { | |
5f73076c | 149 | unsigned changed = ce_match_stat(ce, &st, 1); |
12dccc16 LT |
150 | if (!changed) |
151 | return 0; | |
152 | if (!state->force) { | |
153 | if (!state->quiet) | |
215a7ad1 | 154 | fprintf(stderr, "git-checkout-index: %s already exists\n", path); |
4b12dae6 | 155 | return -1; |
12dccc16 LT |
156 | } |
157 | ||
158 | /* | |
159 | * We unlink the old file, to get the new one with the | |
160 | * right permissions (including umask, which is nasty | |
161 | * to emulate by hand - much easier to let the system | |
162 | * just do the right thing) | |
163 | */ | |
164 | unlink(path); | |
d48a72f3 LT |
165 | if (S_ISDIR(st.st_mode)) { |
166 | if (!state->force) | |
167 | return error("%s is a directory", path); | |
168 | remove_subtree(path); | |
169 | } | |
de84f99c | 170 | } else if (state->not_new) |
12dccc16 LT |
171 | return 0; |
172 | create_directories(path, state); | |
de84f99c | 173 | return write_entry(ce, path, state, 0); |
12dccc16 | 174 | } |