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