diff options
Diffstat (limited to 'hurd/get-host.c')
-rw-r--r-- | hurd/get-host.c | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/hurd/get-host.c b/hurd/get-host.c deleted file mode 100644 index be8345fbf9..0000000000 --- a/hurd/get-host.c +++ /dev/null @@ -1,92 +0,0 @@ -/* Get a host configuration item kept as the whole contents of a file. - Copyright (C) 1996-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <fcntl.h> -#include <hurd.h> -#include <hurd/lookup.h> -#include "hurdhost.h" -#include <string.h> - -ssize_t -_hurd_get_host_config (const char *item, char *buf, size_t buflen) -{ - error_t err; - char *data; - mach_msg_type_number_t nread, more; - file_t config; - - err = __hurd_file_name_lookup (&_hurd_ports_use, &__getdport, 0, - item, O_RDONLY, 0, &config); - switch (err) - { - case 0: /* Success; read file contents below. */ - break; - - case ENOENT: /* ? Others? All errors? */ - /* The file does not exist, so no value has been set. Rather than - causing gethostname et al to fail with ENOENT, give an empty value - as other systems do before sethostname has been called. */ - if (buflen != 0) - *buf = '\0'; - return 0; - - default: - return __hurd_fail (err); - } - - data = buf; - nread = buflen; - err = __io_read (config, &data, &nread, -1, buflen); - if (! err) - /* Check if there is more in the file we didn't read. */ - err = __io_readable (config, &more); - __mach_port_deallocate (__mach_task_self (), config); - if (err) - return __hurd_fail (err); - if (data != buf) - { - memcpy (buf, data, nread); - __vm_deallocate (__mach_task_self (), (vm_address_t) data, nread); - } - - /* If the file is empty, give an empty value. */ - if (nread == 0) - { - if (buflen != 0) - *buf = '\0'; - return 0; - } - - /* Remove newlines in case someone wrote the file by hand. */ - while (nread > 0 && buf[nread - 1] == '\n') - buf[--nread] = '\0'; - - /* Null-terminate the result if there is enough space. */ - if (nread < buflen) - buf[nread] = '\0'; - else - if (buf[nread - 1] != '\0') - more = 1; - - if (more) - /* If we didn't read the whole file, tell the caller to use a bigger - buffer next time. */ - return __hurd_fail (ENAMETOOLONG); - - return nread; -} |