X-Git-Url: https://git.verplant.org/?a=blobdiff_plain;f=checkout-cache.c;h=9cd289c35a8707feaa8c2c5ea1e6591c00fb0a12;hb=d6db01075b65da2b8584a0450619390893aae103;hp=244ebd122601883e15e8aefea33c7daf8249d862;hpb=d5f415e6f5c1f3930a4651c2804cd4e2205a79de;p=git.git diff --git a/checkout-cache.c b/checkout-cache.c index 244ebd12..9cd289c3 100644 --- a/checkout-cache.c +++ b/checkout-cache.c @@ -5,22 +5,22 @@ * * Careful: order of argument flags does matter. For example, * - * checkout-cache -a -f file.c + * git-checkout-cache -a -f file.c * * Will first check out all files listed in the cache (but not * overwrite any old ones), and then force-checkout "file.c" a * second time (ie that one _will_ overwrite any old contents * with the same filename). * - * Also, just doing "checkout-cache" does nothing. You probably - * meant "checkout-cache -a". And if you want to force it, you - * want "checkout-cache -f -a". + * Also, just doing "git-checkout-cache" does nothing. You probably + * meant "git-checkout-cache -a". And if you want to force it, you + * want "git-checkout-cache -f -a". * * Intuitiveness is not the goal here. Repeatability is. The * reason for the "no arguments means no work" thing is that * from scripts you are supposed to be able to do things like * - * find . -name '*.h' -print0 | xargs -0 checkout-cache -f -- + * find . -name '*.h' -print0 | xargs -0 git-checkout-cache -f -- * * which will force all existing *.h files to be replaced with * their cached copies. If an empty command line implied "all", @@ -32,9 +32,11 @@ * of "-a" causing problems (not possible in the above example, * but get used to it in scripting!). */ +#include +#include #include "cache.h" -static int force = 0, quiet = 0, not_new = 0; +static int force = 0, quiet = 0, not_new = 0, refresh_cache = 0; static void create_directories(const char *path) { @@ -46,8 +48,49 @@ static void create_directories(const char *path) len = slash - path; memcpy(buf, path, len); buf[len] = 0; - mkdir(buf, 0755); + if (mkdir(buf, 0755)) { + if (errno == EEXIST) { + struct stat st; + if (!lstat(buf, &st) && S_ISDIR(st.st_mode)) + continue; /* ok */ + if (force && !unlink(buf) && !mkdir(buf, 0755)) + continue; + } + die("cannot create directory at %s", buf); + } + } + free(buf); +} + +static void remove_subtree(const char *path) +{ + DIR *dir = opendir(path); + struct dirent *de; + char pathbuf[PATH_MAX]; + char *name; + + if (!dir) + die("cannot opendir %s", path); + strcpy(pathbuf, path); + name = pathbuf + strlen(path); + *name++ = '/'; + while ((de = readdir(dir)) != NULL) { + struct stat st; + if ((de->d_name[0] == '.') && + ((de->d_name[1] == 0) || + ((de->d_name[1] == '.') && de->d_name[2] == 0))) + continue; + strcpy(name, de->d_name); + if (lstat(pathbuf, &st)) + die("cannot lstat %s", pathbuf); + if (S_ISDIR(st.st_mode)) + remove_subtree(pathbuf); + else if (unlink(pathbuf)) + die("cannot unlink %s", pathbuf); } + closedir(dir); + if (rmdir(path)) + die("cannot rmdir %s", path); } static int create_file(const char *path, unsigned int mode) @@ -55,10 +98,11 @@ static int create_file(const char *path, unsigned int mode) int fd; mode = (mode & 0100) ? 0777 : 0666; + create_directories(path); fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode); if (fd < 0) { - if (errno == ENOENT) { - create_directories(path); + if (errno == EISDIR && force) { + remove_subtree(path); fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode); } } @@ -76,7 +120,9 @@ static int write_entry(struct cache_entry *ce, const char *path) new = read_sha1_file(ce->sha1, type, &size); if (!new || strcmp(type, "blob")) { - return error("checkout-cache: unable to read sha1 file of %s (%s)", + if (new) + free(new); + return error("git-checkout-cache: unable to read sha1 file of %s (%s)", path, sha1_to_hex(ce->sha1)); } switch (ntohl(ce->ce_mode) & S_IFMT) { @@ -84,14 +130,14 @@ static int write_entry(struct cache_entry *ce, const char *path) fd = create_file(path, ntohl(ce->ce_mode)); if (fd < 0) { free(new); - return error("checkout-cache: unable to create file %s (%s)", + return error("git-checkout-cache: unable to create file %s (%s)", path, strerror(errno)); } wrote = write(fd, new, size); close(fd); free(new); if (wrote != size) - return error("checkout-cache: unable to write file %s", path); + return error("git-checkout-cache: unable to write file %s", path); break; case S_IFLNK: memcpy(target, new, size); @@ -99,14 +145,20 @@ static int write_entry(struct cache_entry *ce, const char *path) create_directories(path); if (symlink(target, path)) { free(new); - return error("checkout-cache: unable to create symlink %s (%s)", + return error("git-checkout-cache: unable to create symlink %s (%s)", path, strerror(errno)); } free(new); break; default: free(new); - return error("checkout-cache: unknown file mode for %s", path); + return error("git-checkout-cache: unknown file mode for %s", path); + } + + if (refresh_cache) { + struct stat st; + lstat(ce->name, &st); + fill_stat_cache_info(ce, &st); } return 0; } @@ -121,12 +173,12 @@ static int checkout_entry(struct cache_entry *ce, const char *base_dir) strcpy(path + len, ce->name); if (!lstat(path, &st)) { - unsigned changed = cache_match_stat(ce, &st); + unsigned changed = ce_match_stat(ce, &st); if (!changed) return 0; if (!force) { if (!quiet) - fprintf(stderr, "checkout-cache: %s already exists\n", path); + fprintf(stderr, "git-checkout-cache: %s already exists\n", path); return 0; } @@ -149,7 +201,7 @@ static int checkout_file(const char *name, const char *base_dir) if (!quiet) { pos = -pos - 1; fprintf(stderr, - "checkout-cache: %s is %s.\n", + "git-checkout-cache: %s is %s.\n", name, (pos < active_nr && !strcmp(active_cache[pos]->name, name)) ? @@ -178,6 +230,8 @@ int main(int argc, char **argv) { int i, force_filename = 0; const char *base_dir = ""; + struct cache_file cache_file; + int newfd = -1; if (read_cache() < 0) { die("invalid cache"); @@ -206,12 +260,37 @@ int main(int argc, char **argv) not_new = 1; continue; } + if (!strcmp(arg, "-u")) { + refresh_cache = 1; + if (newfd < 0) + newfd = hold_index_file_for_update + (&cache_file, + get_index_file()); + if (newfd < 0) + die("cannot open index.lock file."); + continue; + } if (!memcmp(arg, "--prefix=", 9)) { base_dir = arg+9; continue; } } + if (base_dir[0]) { + /* when --prefix is specified we do not + * want to update cache. + */ + if (refresh_cache) { + close(newfd); newfd = -1; + rollback_index_file(&cache_file); + } + refresh_cache = 0; + } checkout_file(arg, base_dir); } + + if (0 <= newfd && + (write_cache(newfd, active_cache, active_nr) || + commit_index_file(&cache_file))) + die("Unable to write new cachefile"); return 0; }