+++ /dev/null
-/* $Id: inndf.c 6677 2004-03-03 18:36:07Z hkehoe $
-**
-** Reports free kilobytes (not disk blocks) or free inodes.
-**
-** Written by Ian Dickinson <idickins@fore.com>
-** Wed Jul 26 10:11:38 BST 1995 (My birthday - 27 today!)
-**
-** inndf is a replacement for 'df | awk' in innwatch.ctl and for reporting
-** free space in other INN scripts. It doesn't sync, it forks less, and
-** it's generally less complicated.
-**
-** Usage: inndf [-i] <directory> [<directory> ...]
-** inndf -n
-** inndf -o
-**
-** Compile with -lserver (ie. /usr/lib/libserver.a) if you run Sun's Online
-** DiskSuite under SunOS 4.x. The wrapper functions there make the system
-** call transparent; they copy the f_spare values to the correct spots, so
-** f_blocks, f_bfree, f_bavail can exceed 2GB.
-**
-** Compile with -DHAVE_STATVFS for these systems:
-** System V Release 4.x
-** Solaris 2.x
-** HP-UX 10.x
-** OSF1
-**
-** Compile with -DHAVE_STATFS for these systems:
-** SunOS 4.x/Solaris 1.x
-** HP-UX 9.x
-** Linux
-** NeXTstep 3.x
-**
-** (Or even better, let autoconf take care of it.)
-**
-** Thanks to these folks for bug fixes and porting information:
-** Mahesh Ramachandran <rr@eel.ufl.edu>
-** Chuck Swiger <chuck@its.com>
-** Sang-yong Suh <sysuh@kigam.re.kr>
-** Swa Frantzen <Swa.Frantzen@Belgium.EU.net>
-** Brad Dickey <bdickey@haverford.edu>
-** Taso N. Devetzis <devetzis@snet.net>
-** Wei-Yeh Lee <weiyeh@columbia.edu>
-** Jeff Garzik <jeff.garzik@spinne.com>
-*/
-
-#include "config.h"
-#include "clibrary.h"
-
-#include "inn/innconf.h"
-#include "inn/messages.h"
-#include "inn/qio.h"
-#include "libinn.h"
-#include "ov.h"
-#include "paths.h"
-
-/* The portability mess. Hide everything in macros so that the actual code
- is relatively clean. SysV uses statvfs, BSD uses statfs, and ULTRIX is
- just weird (and isn't worth checking for in configure).
-
- df_declare declares a variable of the appropriate type to pass to df_stat
- along with a path; df_stat will return true on success, false on failure.
- df_avail gives the number of free blocks, the size of those blocks given
- in df_bsize (which handles SysV's weird fragment vs. preferred block size
- thing). df_inodes returns the free inodes. */
-#if HAVE_STATVFS
-# include <sys/statvfs.h>
-# define df_stat(p, s) (statvfs((p), (s)) == 0)
-# define df_declare(s) struct statvfs s
-# define df_total(s) ((s).f_blocks)
-# define df_avail(s) ((s).f_bavail)
-# define df_scale(s) ((s).f_frsize == 0 ? (s).f_bsize : (s).f_frsize)
-# define df_files(s) ((s).f_files)
-# define df_favail(s) ((s).f_favail)
-#elif HAVE_STATFS
-# if HAVE_SYS_VFS_H
-# include <sys/vfs.h>
-# endif
-# if HAVE_SYS_PARAM_H
-# include <sys/param.h>
-# endif
-# if HAVE_SYS_MOUNT_H
-# include <sys/mount.h>
-# endif
-# ifdef __ultrix__
-# define df_stat(p, s) (statfs((p), (s)) >= 1)
-# define df_declare(s) struct fs_data s
-# define df_total(s) ((s).fd_btot)
-# define df_avail(s) ((s).fd_bfreen)
-# define df_scale(s) 1024
-# define df_files(s) ((s).fd_gtot)
-# define df_favail(s) ((s).fd_gfree)
-# else
-# define df_stat(p, s) (statfs((p), (s)) == 0)
-# define df_declare(s) struct statfs s
-# define df_total(s) ((s).f_blocks)
-# define df_avail(s) ((s).f_bavail)
-# define df_scale(s) ((s).f_bsize)
-# define df_files(s) ((s).f_files)
-# define df_favail(s) ((s).f_ffree)
-# endif
-#else
-# error "Platform not supported. Neither statvfs nor statfs available."
-#endif
-
-static const char usage[] = "\
-Usage: inndf [-i] [-f filename] [-F] <directory> [<directory> ...]\n\
- inndf -n\n\
- inndf -o\n\
-\n\
-The first form gives the free space in kilobytes (or the count of free\n\
-inodes if -i is given) in the file systems given by the arguments. If\n\
--f is given, the corresponding file should be a list of directories to\n\
-check in addition to the arguments. -F uses <pathetc>/filesystems as the\n\
-file and is otherwise the same.\n\
-\n\
-The second form gives the total count of overview records stored. The\n\
-third form gives the percentage space allocated to overview that's been\n\
-used (if the overview method used supports this query).";
-
-/*
-** Given a path, a flag saying whether to look at inodes instead of free
-** disk space, and a flag saying whether to format in columns, print out
-** the amount of free space or inodes on that file system. Returns the
-** percentage free, which may be printed out by the caller.
-*/
-static void
-printspace(const char *path, bool inode, bool fancy)
-{
- df_declare(info);
- unsigned long amount;
- double percent;
-
- if (df_stat(path, &info)) {
- if (inode) {
- amount = df_favail(info);
-
- /* This value is compared using the shell by innwatch, and some
- shells can't cope with anything larger than the maximum value
- of a signed long. ReiserFS returns 2^32 - 1, however, since it
- has no concept of inodes. So cap the returned value at the max
- value of a signed long. */
- if (amount > (1UL << 31) - 1)
- amount = (1UL << 31) - 1;
-
- /* 2.6 kernels show 0 available and used inodes, instead. */
- if (amount == 0 && df_files(info) == 0)
- amount = (1UL << 31) - 1;
- } else {
- /* Do the multiplication in floating point to try to retain
- accuracy if the free space in bytes would overflow an
- unsigned long. This should be safe until file systems larger
- than 4TB (which may not be much longer -- we should use long
- long instead if we have it).
-
- Be very careful about the order of casts here; it's too
- easy to cast back into an unsigned long a value that
- overflows, and one then gets silently wrong results. */
- amount = (unsigned long)
- (((double) df_avail(info) * df_scale(info)) / 1024.0);
- }
- } else {
- /* On error, free space is zero. */
- amount = 0;
- }
- printf(fancy ? "%10lu" : "%lu", amount);
- if (fancy) {
- printf(inode ? " inodes available " : " Kbytes available ");
- if (inode)
- percent = 100 * ((double) df_favail(info) / df_files(info));
- else
- percent = 100 * ((double) df_avail(info) / df_total(info));
- if (percent < 9.95)
- printf(" (%3.1f%%)", percent);
- else if (percent < 99.95)
- printf(" (%4.1f%%)", percent);
- else
- printf("(%5.1f%%)", percent);
- }
-}
-
-static void
-printspace_formatted(const char *path, bool inode)
-{
- printf("%-40s ", path);
- printspace(path, inode, true);
- printf("\n");
-}
-
-static char *
-readline(QIOSTATE *qp)
-{
- char *line, *p;
-
- for (line = QIOread(qp); line != NULL; line = QIOread(qp)) {
- p = strchr(line, '#');
- if (p != NULL)
- *p = '\0';
- for (; *line == ' ' || *line == '\t'; line++)
- ;
- if (*line != '\0') {
- for (p = line; *p != '\0' && *p != ' ' && *p != '\t'; p++)
- ;
- *p = '\0';
- return line;
- }
- }
- return NULL;
-}
-
-int
-main(int argc, char *argv[])
-{
- int option, i, count;
- unsigned long total;
- QIOSTATE *qp;
- char *active, *group, *line, *p;
- char *file = NULL;
- bool inode = false;
- bool overview = false;
- bool ovcount = false;
- bool use_filesystems = false;
-
- while ((option = getopt(argc, argv, "hinof:F")) != EOF) {
- switch (option) {
- default:
- die(usage);
- case 'h':
- printf("%s\n", usage);
- exit(0);
- case 'i':
- inode = true;
- break;
- case 'n':
- ovcount = true;
- break;
- case 'o':
- overview = true;
- break;
- case 'f':
- if (file != NULL)
- die("inndf: Only one of -f or -F may be given");
- file = xstrdup(optarg);
- break;
- case 'F':
- if (file != NULL)
- die("inndf: Only one of -f or -F may be given");
- if (!innconf_read(NULL))
- exit(1);
- file = concatpath(innconf->pathetc, INN_PATH_FILESYSTEMS);
- use_filesystems = true;
- break;
- }
- }
- argc -= optind;
- argv += optind;
-
- if (argc == 0 && !overview && !ovcount && file == NULL)
- die(usage);
-
- /* Set the program name now rather than earlier so that it doesn't get
- prepended to usage messages. */
- message_program_name = "inndf";
-
- /* If directories were specified, get statistics about them. If only
- one was given, just print out the number without the path or any
- explanatory text; this mode is used by e.g. innwatch. Otherwise,
- format things nicely. */
- if (argc == 1 && !overview && !ovcount && file == NULL) {
- printspace(argv[0], inode, false);
- printf("\n");
- } else {
- for (i = 0; i < argc; i++)
- printspace_formatted(argv[i], inode);
- if (file != NULL) {
- qp = QIOopen(file);
- if (qp == NULL) {
- if (!use_filesystems)
- sysdie("can't open %s", file);
- } else {
- line = readline(qp);
- while (line != NULL) {
- printspace_formatted(line, inode);
- line = readline(qp);
- }
- QIOclose(qp);
- }
- free(file);
- }
- }
-
- /* If we're going to be getting information from overview, do the icky
- initialization stuff. */
- if (overview || ovcount) {
- if (!use_filesystems)
- if (!innconf_read(NULL))
- exit(1);
- if (!OVopen(OV_READ))
- die("OVopen failed");
- }
-
- /* For the count, we have to troll through the active file and query the
- overview backend for each group. */
- if (ovcount) {
- active = concatpath(innconf->pathdb, _PATH_ACTIVE);
- qp = QIOopen(active);
- if (qp == NULL)
- sysdie("can't open %s", active);
-
- total = 0;
- group = QIOread(qp);
- while (group != NULL) {
- p = strchr(group, ' ');
- if (p != NULL)
- *p = '\0';
- if (OVgroupstats(group, NULL, NULL, &count, NULL))
- total += count;
- group = QIOread(qp);
- }
- QIOclose(qp);
- printf("%lu overview records stored\n", total);
- }
-
- /* Percentage used is simpler, but only some overview methods understand
- that query. */
- if (overview) {
- if (OVctl(OVSPACE, &count)) {
- if (count == -1)
- printf("Space used is meaningless for the %s method\n",
- innconf->ovmethod);
- else
- printf("%d%% overview space used\n", count);
- }
- }
- exit(0);
-}
~ian / innduct.git / blobdiff