# Filesystem access contexts
[Filesystem interaction subsystem]

Filesystem Access Contexts. More...

## Typedefs
typedef struct svn_fs_access_t | svn_fs_access_t
| An opaque object representing temporary user data.
## Functions
svn_error_t * | svn_fs_create_access (svn_fs_access_t **access_ctx, const char *username, apr_pool_t *pool)
| Set *access_ctx to a new svn_fs_access_t object representing username, allocated in pool.
svn_error_t * | svn_fs_set_access (svn_fs_t *fs, svn_fs_access_t *access_ctx)
| Associate access_ctx with an open fs.
svn_error_t * | svn_fs_get_access (svn_fs_access_t **access_ctx, svn_fs_t *fs)
| Set *access_ctx to the current fs access context, or NULL if there is no current fs access context.
svn_error_t * | svn_fs_access_get_username (const char **username, svn_fs_access_t *access_ctx)
| Accessors for the access context:
svn_error_t * | svn_fs_access_add_lock_token2 (svn_fs_access_t *access_ctx, const char *path, const char *token)
| Push a lock-token token associated with path path into the context access_ctx.
SVN_DEPRECATED svn_error_t * | svn_fs_access_add_lock_token (svn_fs_access_t *access_ctx, const char *token)
| Same as svn_fs_access_add_lock_token2(), but with path set to value 1.

## Detailed Description

Filesystem Access Contexts.

Since:
  New in 1.2.

At certain times, filesystem functions need access to temporary user data. For example, which user is changing a file? If the file is locked, has an appropriate lock-token been supplied?

This temporary user data is stored in an "access context" object, and the access context is then connected to the filesystem object. Whenever a filesystem function requires information, it can pull things out of the context as needed.

## Typedef Documentation

typedef struct svn_fs_access_t svn_fs_access_t

An opaque object representing temporary user data.

Definition at line 483 of file svn_fs.h.

## Function Documentation

SVN_DEPRECATED svn_error_t* svn_fs_access_add_lock_token | ( | svn_fs_access_t * | access_ctx,
|  | const char * | token |
| ) |  |  |

Same as svn_fs_access_add_lock_token2(), but with path set to value 1.

Deprecated:
  Provided for backward compatibility with the 1.5 API.

svn_error_t* svn_fs_access_add_lock_token2 | ( | svn_fs_access_t * | access_ctx,
|  | const char * | path,
|  | const char * | token |
| ) |  |  |

Push a lock-token token associated with path path into the context access_ctx.

The context remembers all tokens it receives, and makes them available to fs functions. The token and path are not duplicated into access_ctx's pool; make sure the token's lifetime is at least as long as access_ctx.

Since:
  New in 1.6.

svn_error_t* svn_fs_access_get_username | ( | const char ** | username,
|  | svn_fs_access_t * | access_ctx |
| ) |  |  |

Accessors for the access context:

Set *username to the name represented by access_ctx.

svn_error_t* svn_fs_create_access | ( | svn_fs_access_t ** | access_ctx,
|  | const char * | username,
|  | apr_pool_t * | pool |
| ) |  |  |

Set *access_ctx to a new svn_fs_access_t object representing username, allocated in pool.

username is presumed to have been authenticated by the caller.

Make a deep copy of username.

svn_error_t* svn_fs_set_access | ( | svn_fs_t * | fs,
|  | svn_fs_access_t * | access_ctx |
| ) |  |  |

Associate access_ctx with an open fs.

This function can be run multiple times on the same open filesystem, in order to change the filesystem access context for different filesystem operations. Pass a NULL value for access_ctx to disassociate the current access context from the filesystem.

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