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fs-util: adjust punctuation in comments

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This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2019-07-18 13:14:17 +02:00
parent f20319402a
commit 4293c32b0e
2 changed files with 18 additions and 17 deletions
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18
src/basic/fs-util.c
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@ -732,7 +732,7 @@ int chase_symlinks(const char *path, const char *original_root, unsigned flags,
* process. On each iteration, we move one component from "todo" to "done", processing it's special meaning
* each time. The "todo" path always starts with at least one slash, the "done" path always ends in no
* slash. We always keep an O_PATH fd to the component we are currently processing, thus keeping lookup races
* at a minimum.
* to a minimum.
*
* Suggested usage: whenever you want to canonicalize a path, use this function. Pass the absolute path you got
* as-is: fully qualified and relative to your host's root. Optionally, specify the root parameter to tell this
@ -742,9 +742,9 @@ int chase_symlinks(const char *path, const char *original_root, unsigned flags,
* There are three ways to invoke this function:
*
* 1. Without CHASE_STEP or CHASE_OPEN: in this case the path is resolved and the normalized path is returned
* in `ret`. The return value is < 0 on error. If CHASE_NONEXISTENT is also set 0 is returned if the file
* doesn't exist, > 0 otherwise. If CHASE_NONEXISTENT is not set >= 0 is returned if the destination was
* found, -ENOENT if it doesn't.
* in `ret`. The return value is < 0 on error. If CHASE_NONEXISTENT is also set, 0 is returned if the file
* doesn't exist, > 0 otherwise. If CHASE_NONEXISTENT is not set, >= 0 is returned if the destination was
* found, -ENOENT if it wasn't.
*
* 2. With CHASE_OPEN: in this case the destination is opened after chasing it as O_PATH and this file
* descriptor is returned as return value. This is useful to open files relative to some root
@ -760,13 +760,13 @@ int chase_symlinks(const char *path, const char *original_root, unsigned flags,
*
* 4. With CHASE_SAFE: in this case the path must not contain unsafe transitions, i.e. transitions from
* unprivileged to privileged files or directories. In such cases the return value is -ENOLINK. If
* CHASE_WARN is also set a warning describing the unsafe transition is emitted.
* CHASE_WARN is also set, a warning describing the unsafe transition is emitted.
*
* 5. With CHASE_NO_AUTOFS: in this case if an autofs mount point is encountered, the path normalization is
* aborted and -EREMOTE is returned. If CHASE_WARN is also set a warning showing the path of the mount point
* is emitted.
* 5. With CHASE_NO_AUTOFS: in this case if an autofs mount point is encountered, path normalization
* is aborted and -EREMOTE is returned. If CHASE_WARN is also set, a warning showing the path of
* the mount point is emitted.
*
* */
*/
/* A root directory of "/" or "" is identical to none */
if (empty_or_root(original_root))

17
src/basic/fs-util.h
View File

@ -74,14 +74,15 @@ union inotify_event_buffer {
int inotify_add_watch_fd(int fd, int what, uint32_t mask);
enum {
CHASE_PREFIX_ROOT = 1 << 0, /* If set, the specified path will be prefixed by the specified root before beginning the iteration */
CHASE_NONEXISTENT = 1 << 1, /* If set, it's OK if the path doesn't actually exist. */
CHASE_NO_AUTOFS = 1 << 2, /* If set, return -EREMOTE if autofs mount point found */
CHASE_SAFE = 1 << 3, /* If set, return EPERM if we ever traverse from unprivileged to privileged files or directories */
CHASE_OPEN = 1 << 4, /* If set, return an O_PATH object to the final component */
CHASE_TRAIL_SLASH = 1 << 5, /* If set, any trailing slash will be preserved */
CHASE_STEP = 1 << 6, /* If set, just execute a single step of the normalization */
CHASE_NOFOLLOW = 1 << 7, /* Only valid with CHASE_OPEN: when the path's right-most component refers to symlink return O_PATH fd of the symlink, rather than following it. */
CHASE_PREFIX_ROOT = 1 << 0, /* The specified path will be prefixed by the specified root before beginning the iteration */
CHASE_NONEXISTENT = 1 << 1, /* It's OK if the path doesn't actually exist. */
CHASE_NO_AUTOFS = 1 << 2, /* Return -EREMOTE if autofs mount point found */
CHASE_SAFE = 1 << 3, /* Return EPERM if we ever traverse from unprivileged to privileged files or directories */
CHASE_OPEN = 1 << 4, /* Return an O_PATH object to the final component */
CHASE_TRAIL_SLASH = 1 << 5, /* Any trailing slash will be preserved */
CHASE_STEP = 1 << 6, /* Just execute a single step of the normalization */
CHASE_NOFOLLOW = 1 << 7, /* Only valid with CHASE_OPEN: when the path's right-most component refers to symlink,
* return O_PATH fd of the symlink, rather than following it. */
CHASE_WARN = 1 << 8, /* Emit an appropriate warning when an error is encountered */
};