diff options
author | Chris Johns <chrisj@rtems.org> | 2008-07-29 02:21:15 +0000 |
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committer | Chris Johns <chrisj@rtems.org> | 2008-07-29 02:21:15 +0000 |
commit | 3899a5379f4bfa067e73b4612a547a308a6634ec (patch) | |
tree | f837533ace01e934da6089cdca360822d85cc662 /cpukit/libmisc/shell/pwcache.c | |
parent | 2008-07-27 Ralf Corsépius <ralf.corsepius@rtems.org> (diff) | |
download | rtems-3899a5379f4bfa067e73b4612a547a308a6634ec.tar.bz2 |
2008-07-29 Chris Johns <chrisj@rtems.org>
* libblock/Makefile.am: Removed src/show_bdbuf.c.
* libblock/src/show_bdbuf.c: Removed.
* libblock/include/rtems/bdbuf.h, cpukit/libblock/src/bdbuf.c:
Rewritten the bdbuf code. Remove pre-emption disable, score
access, fixed many bugs and increased performance.
* libblock/include/rtems/blkdev.h: Added
RTEMS_BLKDEV_CAPABILITIES block device request. Cleaned up
comments. Added block and user fields to the sg buffer
request. Move to rtems_* namespace.
* libblock/include/rtems/diskdevs.h,
cpukit/libblock/src/diskdevs.c: Move to rtems_* namespace. Add a
capabilities field for drivers. Change rtems_disk_lookup to
rtems_disk_obtain to match the release call. You do not lookup and
release a disk, you obtain and release a disk.
* libblock/include/rtems/ide_part_table.h,
libblock/include/rtems/ramdisk.h, libblock/src/ide_part_table.c:
Move to rtems_* namespace.
* libblock/include/rtems/nvdisk.h: Formatting change.
* libblock/src/blkdev.c: Move to rtems_* namespace. Change
rtems_disk_lookup to rtems_disk_obtain
* libblock/src/flashdisk.c: Move to rtems_* namespace. Use the new
support for the block number in the scatter/grather request
struct. This allows non-continuous buffer requests for those
drivers that can support increasing performance.
* libblock/src/nvdisk.c: Move to rtems_* namespace. Removed
warnings. Added better error checking. Fixed some comments.
* libblock/src/ramdisk.c: Move to rtems_* namespace. Added some
trace functions to help debugging upper layers. Use the new
support for the block number in the scatter/grather request
struct. This allows non-continuous buffer requests for those
drivers that can support increasing performance.
* libfs/src/dosfs/fat.c, libfs/src/dosfs/fat.h: Use new chains
API. Removed temporary hack and changed
set_errno_and_return_minus_one to
rtems_set_errno_and_return_minus_one. Move fat_buf_access from
header and stopped it being inlined. Updated to libblock changes.
* libfs/src/dosfs/fat_fat_operations.c,
libfs/src/dosfs/fat_file.c, libfs/src/dosfs/msdos_create.c,
libfs/src/dosfs/msdos_dir.c, libfs/src/dosfs/msdos_eval.c,
libfs/src/dosfs/msdos_file.c, libfs/src/dosfs/msdos_format.c,
libfs/src/dosfs/msdos_free.c, libfs/src/dosfs/msdos_initsupp.c,
libfs/src/dosfs/msdos_misc.c, libfs/src/dosfs/msdos_mknod.c: Use
new chains API. Removed temporary hack and changed
set_errno_and_return_minus_one to
rtems_set_errno_and_return_minus_one. Updated to libblock changes.
* libmisc/Makefile.am: Add new ls and rm command files.
* libmisc/shell/cmp-ls.c, libmisc/shell/extern-ls.h,
libmisc/shell/filemode.c, libmisc/shell/print-ls.c,
libmisc/shell/pwcache.c, libmisc/shell/utils-ls.c,
libmisc/shell/vis.c, shell/vis.h: New.
* libmisc/shell/extern-cp.h, libmisc/shell/main_cp.c,
libmisc/shell/utils-cp.c: Fixed the usage call bug.
* libmisc/shell/main_blksync.c: Updated to the new block IO ioctl
command.
* libmisc/shell/main_ls.c, libmisc/shell/main_rm.c: Updated to BSD
commands with more features.
* score/src/coremutex.c: Fix the strick order mutex code.
* libmisc/shell/shell.c: Change shell tasks mode to be timeslice
and no ASR.
* sapi/include/confdefs.h: Change ata_driver_task_priority to
rtems_ata_driver_task_priority. Add the new BD buf cache
parameters with defaults.
* score/src/interr.c: Do not return if the CPU halt call returns.
Diffstat (limited to 'cpukit/libmisc/shell/pwcache.c')
-rw-r--r-- | cpukit/libmisc/shell/pwcache.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/cpukit/libmisc/shell/pwcache.c b/cpukit/libmisc/shell/pwcache.c new file mode 100644 index 0000000000..6b50bd6eb1 --- /dev/null +++ b/cpukit/libmisc/shell/pwcache.c @@ -0,0 +1,116 @@ +/* + * Copyright (c) 1989, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)pwcache.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD: src/lib/libc/gen/pwcache.c,v 1.11 2007/01/09 00:27:55 imp Exp $"); + +#include <sys/types.h> + +#include <grp.h> +#include <pwd.h> +#include <stdio.h> +#include <string.h> +//#include <utmp.h> + +#define UT_NAMESIZE 64 + +#define NCACHE 64 /* power of 2 */ +#define MASK (NCACHE - 1) /* bits to store with */ + +const char * +user_from_uid(uid_t uid, int nouser) +{ + static struct ncache { + uid_t uid; + int found; + char name[UT_NAMESIZE + 1]; + } c_uid[NCACHE]; + static int pwopen; + struct passwd *pw; + struct ncache *cp; + + cp = c_uid + (uid & MASK); + if (cp->uid != uid || !*cp->name) { + if (pwopen == 0) { + //setpassent(1); + pwopen = 1; + } + pw = getpwuid(uid); + cp->uid = uid; + if (pw != NULL) { + cp->found = 1; + (void)strncpy(cp->name, pw->pw_name, UT_NAMESIZE); + cp->name[UT_NAMESIZE] = '\0'; + } else { + cp->found = 0; + (void)snprintf(cp->name, UT_NAMESIZE, "%u", uid); + if (nouser) + return (NULL); + } + } + return ((nouser && !cp->found) ? NULL : cp->name); +} + +char * +group_from_gid(gid_t gid, int nogroup) +{ + static struct ncache { + gid_t gid; + int found; + char name[UT_NAMESIZE + 1]; + } c_gid[NCACHE]; + static int gropen; + struct group *gr; + struct ncache *cp; + + cp = c_gid + (gid & MASK); + if (cp->gid != gid || !*cp->name) { + if (gropen == 0) { + //setgroupent(1); + gropen = 1; + } + gr = getgrgid(gid); + cp->gid = gid; + if (gr != NULL) { + cp->found = 1; + (void)strncpy(cp->name, gr->gr_name, UT_NAMESIZE); + cp->name[UT_NAMESIZE] = '\0'; + } else { + cp->found = 0; + (void)snprintf(cp->name, UT_NAMESIZE, "%u", gid); + if (nogroup) + return (NULL); + } + } + return ((nogroup && !cp->found) ? NULL : cp->name); +} + |