5.18 File Security-Guard Checks
| (require ffi/file) | package: base |
procedure
(security-guard-check-file who path perms) → void?
who : symbol? path : path-string? perms : (listof (or/c 'read 'write 'execute 'delete 'exists))
Checks whether (current-security-guard) permits access to the
file specified by path with the permissions
perms. See make-security-guard for more information
on perms.
The symbol who should be the name of the function on whose behalf the security check is performed; it is passed to the security guard to use in access-denied errors.
procedure
(_file/guard perms [who]) → ctype?
perms : (listof (or/c 'read 'write 'execute 'delete 'exists)) who : symbol? = '_file/guard
Like _file and _path, but conversion from Racket to
C first completes the path using path->complete-path then
cleanses it using cleanse-path, then checks that the current
security guard grants access on the resulting complete path with
perms. As an output value, identical to _path.
Equivalent to (_file/guard '(read) '_file/r) and
(_file/guard '(read write) '_file/rw), respectively.
procedure
(security-guard-check-file-link who path dest) → void? who : symbol? path : path-string? dest : path-string?
Checks whether (current-security-guard) permits link creation
of path as a link dest. The symbol who is
the same as for security-guard-check-file.
Added in version 6.9.0.5 of package base.
procedure
(security-guard-check-network who host port mode) → void? who : symbol? host : (or/c string? #f) port : (or/c (integer-in 1 65535) #f) mode : (or/c 'client 'server)
Checks whether (current-security-guard) permits network
accesst at host and port in server or client
mode as specified by mode. The symbol who is the
same as for security-guard-check-file.
Added in version 6.9.0.5 of package base.