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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" | |
4 | ||
5 | static void create_directories(const char *path, struct checkout *state) | |
6 | { | |
7 | int len = strlen(path); | |
8 | char *buf = xmalloc(len + 1); | |
9 | const char *slash = path; | |
10 | ||
11 | while ((slash = strchr(slash+1, '/')) != NULL) { | |
12 | len = slash - path; | |
13 | memcpy(buf, path, len); | |
14 | buf[len] = 0; | |
f312de01 | 15 | if (mkdir(buf, 0777)) { |
12dccc16 LT |
16 | if (errno == EEXIST) { |
17 | struct stat st; | |
f312de01 | 18 | if (len > state->base_dir_len && state->force && !unlink(buf) && !mkdir(buf, 0777)) |
12dccc16 LT |
19 | continue; |
20 | if (!stat(buf, &st) && S_ISDIR(st.st_mode)) | |
21 | continue; /* ok */ | |
22 | } | |
23 | die("cannot create directory at %s", buf); | |
24 | } | |
25 | } | |
26 | free(buf); | |
27 | } | |
28 | ||
29 | static void remove_subtree(const char *path) | |
30 | { | |
31 | DIR *dir = opendir(path); | |
32 | struct dirent *de; | |
33 | char pathbuf[PATH_MAX]; | |
34 | char *name; | |
35 | ||
36 | if (!dir) | |
37 | die("cannot opendir %s", path); | |
38 | strcpy(pathbuf, path); | |
39 | name = pathbuf + strlen(path); | |
40 | *name++ = '/'; | |
41 | while ((de = readdir(dir)) != NULL) { | |
42 | struct stat st; | |
43 | if ((de->d_name[0] == '.') && | |
44 | ((de->d_name[1] == 0) || | |
45 | ((de->d_name[1] == '.') && de->d_name[2] == 0))) | |
46 | continue; | |
47 | strcpy(name, de->d_name); | |
48 | if (lstat(pathbuf, &st)) | |
49 | die("cannot lstat %s", pathbuf); | |
50 | if (S_ISDIR(st.st_mode)) | |
51 | remove_subtree(pathbuf); | |
52 | else if (unlink(pathbuf)) | |
53 | die("cannot unlink %s", pathbuf); | |
54 | } | |
55 | closedir(dir); | |
56 | if (rmdir(path)) | |
57 | die("cannot rmdir %s", path); | |
58 | } | |
59 | ||
d48a72f3 | 60 | static int create_file(const char *path, unsigned int mode) |
12dccc16 | 61 | { |
12dccc16 | 62 | mode = (mode & 0100) ? 0777 : 0666; |
781411ed | 63 | return open(path, O_WRONLY | O_CREAT | O_EXCL, mode); |
12dccc16 LT |
64 | } |
65 | ||
de84f99c | 66 | static int write_entry(struct cache_entry *ce, char *path, struct checkout *state, int to_tempfile) |
12dccc16 LT |
67 | { |
68 | int fd; | |
69 | void *new; | |
70 | unsigned long size; | |
71 | long wrote; | |
72 | char type[20]; | |
12dccc16 LT |
73 | |
74 | new = read_sha1_file(ce->sha1, type, &size); | |
75 | if (!new || strcmp(type, "blob")) { | |
76 | if (new) | |
77 | free(new); | |
215a7ad1 | 78 | return error("git-checkout-index: unable to read sha1 file of %s (%s)", |
12dccc16 LT |
79 | path, sha1_to_hex(ce->sha1)); |
80 | } | |
81 | switch (ntohl(ce->ce_mode) & S_IFMT) { | |
82 | case S_IFREG: | |
de84f99c SP |
83 | if (to_tempfile) { |
84 | strcpy(path, ".merge_file_XXXXXX"); | |
85 | fd = mkstemp(path); | |
86 | } else | |
87 | fd = create_file(path, ntohl(ce->ce_mode)); | |
12dccc16 LT |
88 | if (fd < 0) { |
89 | free(new); | |
215a7ad1 | 90 | return error("git-checkout-index: unable to create file %s (%s)", |
12dccc16 LT |
91 | path, strerror(errno)); |
92 | } | |
93 | wrote = write(fd, new, size); | |
94 | close(fd); | |
95 | free(new); | |
96 | if (wrote != size) | |
215a7ad1 | 97 | return error("git-checkout-index: unable to write file %s", path); |
12dccc16 LT |
98 | break; |
99 | case S_IFLNK: | |
de84f99c SP |
100 | if (to_tempfile) { |
101 | strcpy(path, ".merge_link_XXXXXX"); | |
102 | fd = mkstemp(path); | |
103 | if (fd < 0) { | |
104 | free(new); | |
105 | return error("git-checkout-index: unable to create " | |
106 | "file %s (%s)", path, strerror(errno)); | |
107 | } | |
108 | wrote = write(fd, new, size); | |
109 | close(fd); | |
110 | free(new); | |
111 | if (wrote != size) | |
112 | return error("git-checkout-index: unable to write file %s", | |
113 | path); | |
114 | } else { | |
115 | wrote = symlink(new, path); | |
12dccc16 | 116 | free(new); |
de84f99c SP |
117 | if (wrote) |
118 | return error("git-checkout-index: unable to create " | |
119 | "symlink %s (%s)", path, strerror(errno)); | |
12dccc16 | 120 | } |
12dccc16 LT |
121 | break; |
122 | default: | |
123 | free(new); | |
215a7ad1 | 124 | return error("git-checkout-index: unknown file mode for %s", path); |
12dccc16 LT |
125 | } |
126 | ||
6ee67f26 | 127 | if (state->refresh_cache) { |
12dccc16 LT |
128 | struct stat st; |
129 | lstat(ce->name, &st); | |
130 | fill_stat_cache_info(ce, &st); | |
131 | } | |
132 | return 0; | |
133 | } | |
134 | ||
de84f99c | 135 | int checkout_entry(struct cache_entry *ce, struct checkout *state, char *topath) |
12dccc16 | 136 | { |
12dccc16 | 137 | static char path[MAXPATHLEN+1]; |
de84f99c | 138 | struct stat st; |
12dccc16 LT |
139 | int len = state->base_dir_len; |
140 | ||
de84f99c SP |
141 | if (topath) |
142 | return write_entry(ce, topath, state, 1); | |
143 | ||
12dccc16 LT |
144 | memcpy(path, state->base_dir, len); |
145 | strcpy(path + len, ce->name); | |
146 | ||
147 | if (!lstat(path, &st)) { | |
5f73076c | 148 | unsigned changed = ce_match_stat(ce, &st, 1); |
12dccc16 LT |
149 | if (!changed) |
150 | return 0; | |
151 | if (!state->force) { | |
152 | if (!state->quiet) | |
215a7ad1 | 153 | fprintf(stderr, "git-checkout-index: %s already exists\n", path); |
4b12dae6 | 154 | return -1; |
12dccc16 LT |
155 | } |
156 | ||
157 | /* | |
158 | * We unlink the old file, to get the new one with the | |
159 | * right permissions (including umask, which is nasty | |
160 | * to emulate by hand - much easier to let the system | |
161 | * just do the right thing) | |
162 | */ | |
163 | unlink(path); | |
d48a72f3 LT |
164 | if (S_ISDIR(st.st_mode)) { |
165 | if (!state->force) | |
166 | return error("%s is a directory", path); | |
167 | remove_subtree(path); | |
168 | } | |
de84f99c | 169 | } else if (state->not_new) |
12dccc16 LT |
170 | return 0; |
171 | create_directories(path, state); | |
de84f99c | 172 | return write_entry(ce, path, state, 0); |
12dccc16 LT |
173 | } |
174 | ||
175 |