diff options
Diffstat (limited to 'src/machine/image.c')
| -rw-r--r-- | src/machine/image.c | 104 |
1 files changed, 74 insertions, 30 deletions
diff --git a/src/machine/image.c b/src/machine/image.c index 4f59c57888..1574adf30b 100644 --- a/src/machine/image.c +++ b/src/machine/image.c @@ -45,8 +45,9 @@ Image *image_unref(Image *i) { static int image_new( ImageType t, - const char *name, + const char *pretty, const char *path, + const char *filename, bool read_only, usec_t crtime, usec_t mtime, @@ -56,7 +57,8 @@ static int image_new( assert(t >= 0); assert(t < _IMAGE_TYPE_MAX); - assert(name); + assert(pretty); + assert(filename); assert(ret); i = new0(Image, 1); @@ -68,17 +70,19 @@ static int image_new( i->crtime = crtime; i->mtime = mtime; - i->name = strdup(name); + i->name = strdup(pretty); if (!i->name) return -ENOMEM; - if (path) { - i->path = strjoin(path, "/", name, NULL); - if (!i->path) - return -ENOMEM; + if (path) + i->path = strjoin(path, "/", filename, NULL); + else + i->path = strdup(filename); - path_kill_slashes(i->path); - } + if (!i->path) + return -ENOMEM; + + path_kill_slashes(i->path); *ret = i; i = NULL; @@ -86,34 +90,44 @@ static int image_new( return 0; } -static int image_make(int dfd, const char *name, const char *path, Image **ret) { +static int image_make( + const char *pretty, + int dfd, + const char *path, + const char *filename, + Image **ret) { + struct stat st; - bool writable; + bool read_only; int r; - assert(dfd >= 0); - assert(name); + assert(filename); /* We explicitly *do* follow symlinks here, since we want to * allow symlinking trees into /var/lib/container/, and treat * them normally. */ - if (fstatat(dfd, name, &st, 0) < 0) + if (fstatat(dfd, filename, &st, 0) < 0) return -errno; - writable = faccessat(dfd, name, W_OK, AT_EACCESS) >= 0; + read_only = + (path && path_startswith(path, "/usr")) || + faccessat(dfd, filename, W_OK, AT_EACCESS) < 0; if (S_ISDIR(st.st_mode)) { if (!ret) return 1; + if (!pretty) + pretty = filename; + /* btrfs subvolumes have inode 256 */ if (st.st_ino == 256) { _cleanup_close_ int fd = -1; struct statfs sfs; - fd = openat(dfd, name, O_CLOEXEC|O_NOCTTY|O_DIRECTORY); + fd = openat(dfd, filename, O_CLOEXEC|O_NOCTTY|O_DIRECTORY); if (fd < 0) return -errno; @@ -130,9 +144,10 @@ static int image_make(int dfd, const char *name, const char *path, Image **ret) return r; r = image_new(IMAGE_SUBVOLUME, - name, + pretty, path, - info.read_only || !writable, + filename, + info.read_only || read_only, info.otime, 0, ret); @@ -146,9 +161,10 @@ static int image_make(int dfd, const char *name, const char *path, Image **ret) /* It's just a normal directory. */ r = image_new(IMAGE_DIRECTORY, - name, + pretty, path, - !writable, + filename, + read_only, 0, 0, ret); @@ -157,8 +173,7 @@ static int image_make(int dfd, const char *name, const char *path, Image **ret) return 1; - } else if (S_ISREG(st.st_mode) && endswith(name, ".gpt")) { - const char *truncated; + } else if (S_ISREG(st.st_mode) && endswith(filename, ".gpt")) { usec_t crtime = 0; /* It's a GPT block device */ @@ -166,14 +181,16 @@ static int image_make(int dfd, const char *name, const char *path, Image **ret) if (!ret) return 1; - fd_getcrtime_at(dfd, name, &crtime, 0); + fd_getcrtime_at(dfd, filename, &crtime, 0); - truncated = strndupa(name, strlen(name) - 4); + if (!pretty) + pretty = strndupa(filename, strlen(filename) - 4); r = image_new(IMAGE_GPT, - truncated, + pretty, path, - !(st.st_mode & 0222) || !writable, + filename, + !(st.st_mode & 0222) || read_only, crtime, timespec_load(&st.st_mtim), ret); @@ -207,15 +224,27 @@ int image_find(const char *name, Image **ret) { return -errno; } - r = image_make(dirfd(d), name, path, ret); - if (r == 0 || r == -ENOENT) - continue; + r = image_make(NULL, dirfd(d), path, name, ret); + if (r == 0 || r == -ENOENT) { + _cleanup_free_ char *gpt = NULL; + + gpt = strappend(name, ".gpt"); + if (!gpt) + return -ENOMEM; + + r = image_make(NULL, dirfd(d), path, gpt, ret); + if (r == 0 || r == -ENOENT) + continue; + } if (r < 0) return r; return 1; } + if (streq(name, ".host")) + return image_make(NULL, AT_FDCWD, NULL, "/", ret); + return 0; }; @@ -246,7 +275,7 @@ int image_discover(Hashmap *h) { if (hashmap_contains(h, de->d_name)) continue; - r = image_make(dirfd(d), de->d_name, path, &image); + r = image_make(NULL, dirfd(d), path, de->d_name, &image); if (r == 0 || r == -ENOENT) continue; if (r < 0) @@ -260,6 +289,21 @@ int image_discover(Hashmap *h) { } } + if (!hashmap_contains(h, ".host")) { + _cleanup_(image_unrefp) Image *image = NULL; + + r = image_make(".host", AT_FDCWD, NULL, "/", &image); + if (r < 0) + return r; + + r = hashmap_put(h, image->name, image); + if (r < 0) + return r; + + image = NULL; + + } + return 0; } |