mirror of
https://github.com/ashinn/chibi-scheme.git
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118 lines
3.4 KiB
Text
118 lines
3.4 KiB
Text
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(c-system-include "unistd.h")
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(c-system-include "pwd.h")
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(c-system-include "grp.h")
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(c-system-include "sys/types.h")
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;;> Returns the standard hostname of the current processor.
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(define-c errno (get-host-name "gethostname")
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((result (array char (auto-expand arg1))) (value 256 int)))
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;;> \section{\scheme{(user-information name-or-id)}}
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;;> Returns the password entry for the given user. \var{name-or-id}
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;;> should be a string indicating the user name, or an integer
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;;> for the user id.
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(define-c-struct passwd
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predicate: user?
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(string pw_name user-name)
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(string pw_passwd user-password)
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(uid_t pw_uid user-id)
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(gid_t pw_gid user-group-id)
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(string pw_gecos user-gecos)
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(string pw_dir user-home)
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(string pw_shell user-shell))
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;;> Accessors for the password entry structure returned by
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;;> \scheme{user-information}.
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;;/
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(define-c uid_t (current-user-id "getuid") ())
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(define-c gid_t (current-group-id "getgid") ())
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(define-c uid_t (current-effective-user-id "geteuid") ())
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(define-c gid_t (current-effective-group-id "getegid") ())
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(define-c errno (set-current-user-id! "setuid") (uid_t))
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(define-c errno (set-current-effective-user-id! "seteuid") (uid_t))
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(define-c errno (set-current-group-id! "setgid") (gid_t))
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(define-c errno (set-current-effective-group-id! "setegid") (gid_t))
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;;> Accessors for the current user credentials.
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;;/
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;;> Returns the session id of the specified process,
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;;> defaulting to the current process.
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(define-c pid_t (current-session-id "getsid") ((default 0 pid_t)))
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;;> Creates a new session.
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(define-c pid_t (create-session "setsid") ())
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;;> Set \var{string} to be the new root directory, so that
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;;> paths beginning with "/" are resolved relative to the
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;;> new root.
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(define-c errno (set-root-directory! "chroot") (string))
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(cond-expand
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(emscripten)
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(else
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(define-c errno getpwuid_r
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(uid_t (result passwd)
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(link string)
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(value (string-size arg2) int)
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(result pointer passwd)))
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(define-c errno getpwnam_r
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(string (result passwd)
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(link string)
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(value (string-size arg2) int)
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(result pointer passwd)))))
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(define-c-struct group
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predicate: group?
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(string gr_name group-name)
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(string gr_passwd group-password)
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(gid_t gr_gid group-id)
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;;((array string) gr_mem group-members)
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)
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(cond-expand
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(emscripten)
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(else
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(c-declare "
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int getgrnam_safe(const char* name, struct group* grp,
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char* buf, size_t buflen,
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struct group** result) {
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int res = getgrnam_r(name, grp, buf, buflen, result);
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if (res == 0 && result == NULL) {
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res = errno ? errno : ENOENT;
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}
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return res;
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}
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int getgrgid_safe(gid_t gid, struct group* grp,
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char* buf, size_t buflen,
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struct group** result) {
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int res = getgrgid_r(gid, grp, buf, buflen, result);
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if (res == 0 && result == NULL) {
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res = errno ? errno : ENOENT;
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}
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return res;
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}
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")
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(define-c errno getgrgid-safe
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(gid_t (result group)
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(link string)
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(value (string-size arg2) int)
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(result pointer group)))
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(define-c errno getgrnam-safe
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(string (result group)
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(link string)
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(value (string-size arg2) int)
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(result pointer group)))))
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