120 lines
3.1 KiB
Scheme
120 lines
3.1 KiB
Scheme
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;;; User info
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define-record user-info
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name uid gid home-dir shell
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;; Make user-info records print like #{user-info shivers}.
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((disclose ui)
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(list "user-info" (user-info:name ui))))
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(import-os-error-syscall
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%uid->user-info
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(uid user-info-record)
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"user_info_uid")
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(import-os-error-syscall
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%name->user-info
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(name user-info-record)
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"user_info_name")
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(define (uid->user-info uid)
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(let ((empty-user-info (make-user-info #f uid #f #f #f)))
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(if (%uid->user-info uid empty-user-info)
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empty-user-info
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(error "Cannot get user's information" uid->user-info uid))))
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(define (name->user-info name)
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(let ((empty-user-info (make-user-info name #f #f #f #f)))
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(if (%name->user-info name empty-user-info)
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empty-user-info
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(error "Cannot get user's information" name->user-info name))))
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(define (user-info uid/name)
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((cond ((string? uid/name) name->user-info)
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((integer? uid/name) uid->user-info)
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(else (error "user-info arg must be string or integer" uid/name)))
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uid/name))
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;;; Derived functions
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(define (->uid uid/name)
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(user-info:uid (user-info uid/name)))
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(define (->username uid/name)
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(user-info:name (user-info uid/name)))
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(define (%homedir uid/name)
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(user-info:home-dir (user-info uid/name)))
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(define home-directory "")
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(define (init-home-directory home)
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(set! home-directory home))
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(define (home-dir . maybe-user)
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(if (pair? maybe-user)
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(let ((user (car maybe-user)))
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(ensure-file-name-is-nondirectory
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(or (%homedir user)
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(error "Cannot get user's home directory"
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user))))
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home-directory))
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;;; (home-file [user] fname)
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(define (home-file arg1 . maybe-arg2)
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(receive (dir fname)
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(if (pair? maybe-arg2)
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(values (home-dir arg1) (car maybe-arg2))
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(values home-directory arg1))
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(string-append (file-name-as-directory dir) fname)))
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;;; Group info
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define-record group-info
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name gid members
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;; Make group-info records print like #{group-info wheel}.
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((disclose gi) (list "group-info" (group-info:name gi))))
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(import-os-error-syscall
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%gid->group-info
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(gid group-info-record)
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"group_info_gid")
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(import-os-error-syscall
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%name->group-info
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(name group-info-record)
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"group_info_name")
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(define (gid->group-info gid)
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(let ((empty-group-info (make-group-info #f gid #f)))
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(if (%gid->group-info gid empty-group-info)
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empty-group-info
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(error "Cannot get group's information for gid" gid))))
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(define (name->group-info name)
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(let ((empty-group-info (make-group-info name #f #f)))
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(if (%name->group-info name empty-group-info)
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empty-group-info
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(error "Cannot get group's information for name" name))))
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(define (group-info gid/name)
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((cond ((string? gid/name) name->group-info)
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((integer? gid/name) gid->group-info)
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(else (error "group-info arg must be string or integer" gid/name)))
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gid/name))
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;;; Derived functions
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(define (->gid name)
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(group-info:gid (group-info name)))
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(define (->groupname gid)
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(group-info:name (group-info gid)))
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