2 324d37e7 2019-05-11 stsp * Copyright (c) 2018, 2019 Stefan Sperling <stsp@openbsd.org>
4 324d37e7 2019-05-11 stsp * Permission to use, copy, modify, and distribute this software for any
5 324d37e7 2019-05-11 stsp * purpose with or without fee is hereby granted, provided that the above
6 324d37e7 2019-05-11 stsp * copyright notice and this permission notice appear in all copies.
8 324d37e7 2019-05-11 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 324d37e7 2019-05-11 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 324d37e7 2019-05-11 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 324d37e7 2019-05-11 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 324d37e7 2019-05-11 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 324d37e7 2019-05-11 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 324d37e7 2019-05-11 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 324d37e7 2019-05-11 stsp /* Utilities for dealing with filesystem paths. */
19 bb51a5b4 2020-01-13 stsp #define GOT_DEFAULT_FILE_MODE (S_IFREG | \
20 bb51a5b4 2020-01-13 stsp S_IRUSR|S_IWUSR | S_IRGRP | S_IROTH)
21 bb51a5b4 2020-01-13 stsp #define GOT_DEFAULT_DIR_MODE (S_IFDIR | \
22 bb51a5b4 2020-01-13 stsp S_IRWXU | S_IRGRP|S_IXGRP | S_IROTH|S_IXOTH)
24 20ccae39 2020-07-21 stsp struct dirent;
26 324d37e7 2019-05-11 stsp /* Determine whether a path is an absolute path. */
27 324d37e7 2019-05-11 stsp int got_path_is_absolute(const char *);
30 324d37e7 2019-05-11 stsp * Canonicalize absolute paths by removing redundant path separators
31 324d37e7 2019-05-11 stsp * and resolving references to parent directories ("/../").
32 324d37e7 2019-05-11 stsp * Relative paths are copied from input to buf as-is.
34 324d37e7 2019-05-11 stsp const struct got_error *got_canonpath(const char *, char *, size_t);
37 324d37e7 2019-05-11 stsp * Get child part of two absolute paths. The second path must equal the first
38 324d37e7 2019-05-11 stsp * path up to some path component, and must be longer than the first path.
39 324d37e7 2019-05-11 stsp * The result is allocated with malloc(3).
41 324d37e7 2019-05-11 stsp const struct got_error *got_path_skip_common_ancestor(char **, const char *,
42 324d37e7 2019-05-11 stsp const char *);
45 9d6cabd5 2022-04-07 op * Remove leading components from path. It's an error to strip more
46 9d6cabd5 2022-04-07 op * component than present. The result is allocated dynamically.
48 9d6cabd5 2022-04-07 op const struct got_error *got_path_strip(char **, const char *, int);
50 324d37e7 2019-05-11 stsp /* Determine whether a path points to the root directory "/" . */
51 324d37e7 2019-05-11 stsp int got_path_is_root_dir(const char *);
53 324d37e7 2019-05-11 stsp /* Determine whether a path is a path-wise child of another path. */
54 324d37e7 2019-05-11 stsp int got_path_is_child(const char *, const char *, size_t);
57 324d37e7 2019-05-11 stsp * Like strcmp() but orders children in subdirectories directly after
58 d572f586 2019-08-02 stsp * their parents. String lengths must also be passed in.
60 d572f586 2019-08-02 stsp int got_path_cmp(const char *, const char *, size_t, size_t);
63 324d37e7 2019-05-11 stsp * Path lists allow for predictable concurrent iteration over multiple lists
64 324d37e7 2019-05-11 stsp * of paths obtained from disparate sources which don't all provide the same
65 324d37e7 2019-05-11 stsp * ordering guarantees (e.g. git trees, file index, and on-disk directories).
67 324d37e7 2019-05-11 stsp struct got_pathlist_entry {
68 324d37e7 2019-05-11 stsp TAILQ_ENTRY(got_pathlist_entry) entry;
69 324d37e7 2019-05-11 stsp const char *path;
70 f2b16ada 2019-08-02 stsp size_t path_len;
71 324d37e7 2019-05-11 stsp void *data; /* data pointer provided to got_pathlist_insert() */
73 324d37e7 2019-05-11 stsp TAILQ_HEAD(got_pathlist_head, got_pathlist_entry);
76 324d37e7 2019-05-11 stsp * Insert a path into the list of paths in a predictable order.
77 324d37e7 2019-05-11 stsp * The caller should already have initialized the list head. This list stores
78 324d37e7 2019-05-11 stsp * the pointer to the path as-is, i.e. the path is not copied internally and
79 324d37e7 2019-05-11 stsp * must remain available until the list is freed with got_pathlist_free().
80 324d37e7 2019-05-11 stsp * If the first argument is not NULL, set it to a pointer to the newly inserted
81 324d37e7 2019-05-11 stsp * element, or to a NULL pointer in case the path was already on the list.
83 324d37e7 2019-05-11 stsp const struct got_error *got_pathlist_insert(struct got_pathlist_entry **,
84 324d37e7 2019-05-11 stsp struct got_pathlist_head *, const char *, void *);
87 72ea6654 2019-07-27 stsp * Append a path to the list of paths.
88 72ea6654 2019-07-27 stsp * The caller should already have initialized the list head. This list stores
89 72ea6654 2019-07-27 stsp * the pointer to the path as-is, i.e. the path is not copied internally and
90 72ea6654 2019-07-27 stsp * must remain available until the list is freed with got_pathlist_free().
92 adc19d55 2019-07-28 stsp const struct got_error *got_pathlist_append(struct got_pathlist_head *,
93 adc19d55 2019-07-28 stsp const char *, void *);
95 324d37e7 2019-05-11 stsp /* Free resources allocated for a path list. */
96 324d37e7 2019-05-11 stsp void got_pathlist_free(struct got_pathlist_head *);
98 324d37e7 2019-05-11 stsp /* Attempt to create a directory at a given path. */
99 324d37e7 2019-05-11 stsp const struct got_error *got_path_mkdir(const char *);
101 3c45a30a 2019-05-12 jcs /* Determine whether a directory has no files or directories in it. */
102 280f921b 2019-05-12 stsp int got_path_dir_is_empty(const char *);
105 0c4004e3 2020-10-20 stsp * dirname(3) with error handling, dynamically allocated result, and
106 0c4004e3 2020-10-20 stsp * unmodified input.
108 324d37e7 2019-05-11 stsp const struct got_error *got_path_dirname(char **, const char *);
111 20ccae39 2020-07-21 stsp * Obtain the file type of a given directory entry.
113 20ccae39 2020-07-21 stsp * If the entry has some type other than DT_UNKNOWN, resolve to this type.
115 20ccae39 2020-07-21 stsp * Otherwise, attempt to resolve the type of a DT_UNKNOWN directory
116 20ccae39 2020-07-21 stsp * entry with lstat(2), though the result may still be DT_UNKNOWN.
117 20ccae39 2020-07-21 stsp * This is a fallback to accommodate filesystems which do not provide
118 20ccae39 2020-07-21 stsp * directory entry type information.
119 20ccae39 2020-07-21 stsp * DT_UNKNOWN directory entries occur on NFS mounts without "readdir plus" RPC.
121 20ccae39 2020-07-21 stsp const struct got_error *got_path_dirent_type(int *, const char *,
122 20ccae39 2020-07-21 stsp struct dirent *);
124 562386c5 2020-10-19 stsp /* basename(3) with dynamically allocated result and unmodified input. */
125 f2ea84fa 2019-07-27 stsp const struct got_error *got_path_basename(char **, const char *);
127 72151b04 2019-05-11 stsp /* Strip trailing slashes from a path; path will be modified in-place. */
128 72151b04 2019-05-11 stsp void got_path_strip_trailing_slashes(char *);
130 0ee7065d 2019-05-13 stsp /* Look up the absolute path of a program in $PATH */
131 0ee7065d 2019-05-13 stsp const struct got_error *got_path_find_prog(char **, const char *);
133 2c7829a4 2019-06-17 stsp /* Create a new file at a specified path, with optional content. */
134 2c7829a4 2019-06-17 stsp const struct got_error *got_path_create_file(const char *, const char *);
137 5bb4ff2b 2022-10-15 stsp * Attempt to move an existing file to a new path, creating missing parent
138 5bb4ff2b 2022-10-15 stsp * directories at the destination path if necessary.
139 5bb4ff2b 2022-10-15 stsp * (Cross-mount-point moves are not yet implemented.)
141 5bb4ff2b 2022-10-15 stsp const struct got_error *got_path_move_file(const char *, const char *);
