diff options
Diffstat (limited to 'src/shared')
| -rw-r--r-- | src/shared/path-util.c | 12 | ||||
| -rw-r--r-- | src/shared/path-util.h | 1 | ||||
| -rw-r--r-- | src/shared/util.h | 12 |
3 files changed, 25 insertions, 0 deletions
diff --git a/src/shared/path-util.c b/src/shared/path-util.c index 0b50ea646a..b623fc3dd5 100644 --- a/src/shared/path-util.c +++ b/src/shared/path-util.c @@ -413,3 +413,15 @@ int path_is_read_only_fs(const char *path) { return !!(st.f_flag & ST_RDONLY); } + +int path_is_os_tree(const char *path) { + char *p; + int r; + + /* We use /etc/os-release as flag file if something is an OS */ + + p = strappenda(path, "/etc/os-release"); + r = access(p, F_OK); + + return r < 0 ? 0 : 1; +} diff --git a/src/shared/path-util.h b/src/shared/path-util.h index 9347bc3a9b..ea0f173082 100644 --- a/src/shared/path-util.h +++ b/src/shared/path-util.h @@ -40,3 +40,4 @@ char **path_strv_canonicalize_uniq(char **l); int path_is_mount_point(const char *path, bool allow_symlink); int path_is_read_only_fs(const char *path); +int path_is_os_tree(const char *path); diff --git a/src/shared/util.h b/src/shared/util.h index 3aac165e67..cfb54939cd 100644 --- a/src/shared/util.h +++ b/src/shared/util.h @@ -684,3 +684,15 @@ int unlink_noerrno(const char *path); _new_ = alloca(_len_); \ (void *) memset(_new_, 0, _len_); \ }) + +#define strappenda(a, b) \ + ({ \ + const char *_a_ = (a), *_b_ = (b); \ + char *_c_; \ + size_t _x_, _y_; \ + _x_ = strlen(_a_); \ + _y_ = strlen(_b_); \ + _c_ = alloca(_x_ + _y_ + 1); \ + strcpy(stpcpy(_c_, _a_), _b_); \ + _c_; \ + }) |