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freebsd-dev/usr.sbin/mtree/create.c
Tim Kientzle 9feaf24750 Write timestamps with exactly 9 digits after the period. 
This ensures that the value written is both compatible with
older mtree versions (which expect the value after the period
to be an integer count of nanoseconds after the whole second)
and is a correct floating-point value.

Leave the parsing code unchanged so it will continue to read
older files.
2009-01-31 05:17:28 +00:00

429 lines
11 KiB
C
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/*-
* 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.
* 3. 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 0
#ifndef lint
static char sccsid[] = "@(#)create.c 8.1 (Berkeley) 6/6/93";
#endif /* not lint */
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/stat.h>
#include <dirent.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <fts.h>
#include <grp.h>
#ifdef MD5
#include <md5.h>
#endif
#ifdef SHA1
#include <sha.h>
#endif
#ifdef RMD160
#include <ripemd.h>
#endif
#ifdef SHA256
#include <sha256.h>
#endif
#include <pwd.h>
#include <stdint.h>
#include <stdio.h>
#include <time.h>
#include <unistd.h>
#include <vis.h>
#include "mtree.h"
#include "extern.h"
#define INDENTNAMELEN 15
#define MAXLINELEN 80
static gid_t gid;
static uid_t uid;
static mode_t mode;
static u_long flags = 0xffffffff;
static int dsort(const FTSENT * const *, const FTSENT * const *);
static void output(int, int *, const char *, ...) __printflike(3, 4);
static int statd(FTS *, FTSENT *, uid_t *, gid_t *, mode_t *, u_long *);
static void statf(int, FTSENT *);
void
cwalk(void)
{
FTS *t;
FTSENT *p;
time_t cl;
char *argv[2], host[MAXHOSTNAMELEN];
char dot[] = ".";
int indent = 0;
if (!nflag) {
(void)time(&cl);
(void)gethostname(host, sizeof(host));
(void)printf(
"#\t user: %s\n#\tmachine: %s\n",
getlogin(), host);
(void)printf(
"#\t tree: %s\n#\t date: %s",
fullpath, ctime(&cl));
}
argv[0] = dot;
argv[1] = NULL;
if ((t = fts_open(argv, ftsoptions, dsort)) == NULL)
err(1, "fts_open()");
while ((p = fts_read(t))) {
if (iflag)
indent = p->fts_level * 4;
if (check_excludes(p->fts_name, p->fts_path)) {
fts_set(t, p, FTS_SKIP);
continue;
}
switch(p->fts_info) {
case FTS_D:
if (!dflag)
(void)printf("\n");
if (!nflag)
(void)printf("# %s\n", p->fts_path);
statd(t, p, &uid, &gid, &mode, &flags);
statf(indent, p);
break;
case FTS_DP:
if (!nflag && (p->fts_level > 0))
(void)printf("%*s# %s\n", indent, "", p->fts_path);
(void)printf("%*s..\n", indent, "");
if (!dflag)
(void)printf("\n");
break;
case FTS_DNR:
case FTS_ERR:
case FTS_NS:
warnx("%s: %s", p->fts_path, strerror(p->fts_errno));
break;
default:
if (!dflag)
statf(indent, p);
break;
}
}
(void)fts_close(t);
if (sflag && keys & F_CKSUM)
warnx("%s checksum: %lu", fullpath, (unsigned long)crc_total);
}
static void
statf(int indent, FTSENT *p)
{
struct group *gr;
struct passwd *pw;
uint32_t val;
off_t len;
int fd, offset;
char *fflags;
char *escaped_name;
escaped_name = calloc(1, p->fts_namelen * 4 + 1);
if (escaped_name == NULL)
errx(1, "statf(): calloc() failed");
strvis(escaped_name, p->fts_name, VIS_WHITE | VIS_OCTAL | VIS_GLOB);
if (iflag || S_ISDIR(p->fts_statp->st_mode))
offset = printf("%*s%s", indent, "", escaped_name);
else
offset = printf("%*s %s", indent, "", escaped_name);
free(escaped_name);
if (offset > (INDENTNAMELEN + indent))
offset = MAXLINELEN;
else
offset += printf("%*s", (INDENTNAMELEN + indent) - offset, "");
if (!S_ISREG(p->fts_statp->st_mode) && !dflag)
output(indent, &offset, "type=%s", inotype(p->fts_statp->st_mode));
if (p->fts_statp->st_uid != uid) {
if (keys & F_UNAME) {
pw = getpwuid(p->fts_statp->st_uid);
if (pw != NULL)
output(indent, &offset, "uname=%s", pw->pw_name);
else if (wflag)
warnx("Could not get uname for uid=%u",
p->fts_statp->st_uid);
else
errx(1,
"Could not get uname for uid=%u",
p->fts_statp->st_uid);
}
if (keys & F_UID)
output(indent, &offset, "uid=%u", p->fts_statp->st_uid);
}
if (p->fts_statp->st_gid != gid) {
if (keys & F_GNAME) {
gr = getgrgid(p->fts_statp->st_gid);
if (gr != NULL)
output(indent, &offset, "gname=%s", gr->gr_name);
else if (wflag)
warnx("Could not get gname for gid=%u",
p->fts_statp->st_gid);
else
errx(1,
"Could not get gname for gid=%u",
p->fts_statp->st_gid);
}
if (keys & F_GID)
output(indent, &offset, "gid=%u", p->fts_statp->st_gid);
}
if (keys & F_MODE && (p->fts_statp->st_mode & MBITS) != mode)
output(indent, &offset, "mode=%#o", p->fts_statp->st_mode & MBITS);
if (keys & F_NLINK && p->fts_statp->st_nlink != 1)
output(indent, &offset, "nlink=%u", p->fts_statp->st_nlink);
if (keys & F_SIZE)
output(indent, &offset, "size=%jd",
(intmax_t)p->fts_statp->st_size);
if (keys & F_TIME)
output(indent, &offset, "time=%ld.%09ld",
(long)p->fts_statp->st_mtimespec.tv_sec,
p->fts_statp->st_mtimespec.tv_nsec);
if (keys & F_CKSUM && S_ISREG(p->fts_statp->st_mode)) {
if ((fd = open(p->fts_accpath, O_RDONLY, 0)) < 0 ||
crc(fd, &val, &len))
err(1, "%s", p->fts_accpath);
(void)close(fd);
output(indent, &offset, "cksum=%lu", (unsigned long)val);
}
#ifdef MD5
if (keys & F_MD5 && S_ISREG(p->fts_statp->st_mode)) {
char *digest, buf[33];
digest = MD5File(p->fts_accpath, buf);
if (!digest)
err(1, "%s", p->fts_accpath);
output(indent, &offset, "md5digest=%s", digest);
}
#endif /* MD5 */
#ifdef SHA1
if (keys & F_SHA1 && S_ISREG(p->fts_statp->st_mode)) {
char *digest, buf[41];
digest = SHA1_File(p->fts_accpath, buf);
if (!digest)
err(1, "%s", p->fts_accpath);
output(indent, &offset, "sha1digest=%s", digest);
}
#endif /* SHA1 */
#ifdef RMD160
if (keys & F_RMD160 && S_ISREG(p->fts_statp->st_mode)) {
char *digest, buf[41];
digest = RIPEMD160_File(p->fts_accpath, buf);
if (!digest)
err(1, "%s", p->fts_accpath);
output(indent, &offset, "ripemd160digest=%s", digest);
}
#endif /* RMD160 */
#ifdef SHA256
if (keys & F_SHA256 && S_ISREG(p->fts_statp->st_mode)) {
char *digest, buf[65];
digest = SHA256_File(p->fts_accpath, buf);
if (!digest)
err(1, "%s", p->fts_accpath);
output(indent, &offset, "sha256digest=%s", digest);
}
#endif /* SHA256 */
if (keys & F_SLINK &&
(p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE))
output(indent, &offset, "link=%s", rlink(p->fts_accpath));
if (keys & F_FLAGS && p->fts_statp->st_flags != flags) {
fflags = flags_to_string(p->fts_statp->st_flags);
output(indent, &offset, "flags=%s", fflags);
free(fflags);
}
(void)putchar('\n');
}
#define MAXGID 5000
#define MAXUID 5000
#define MAXMODE MBITS + 1
#define MAXFLAGS 256
#define MAXS 16
static int
statd(FTS *t, FTSENT *parent, uid_t *puid, gid_t *pgid, mode_t *pmode, u_long *pflags)
{
FTSENT *p;
gid_t sgid;
uid_t suid;
mode_t smode;
u_long sflags;
struct group *gr;
struct passwd *pw;
gid_t savegid = *pgid;
uid_t saveuid = *puid;
mode_t savemode = *pmode;
u_long saveflags = *pflags;
u_short maxgid, maxuid, maxmode, maxflags;
u_short g[MAXGID], u[MAXUID], m[MAXMODE], f[MAXFLAGS];
char *fflags;
static int first = 1;
if ((p = fts_children(t, 0)) == NULL) {
if (errno)
err(1, "%s", RP(parent));
return (1);
}
bzero(g, sizeof(g));
bzero(u, sizeof(u));
bzero(m, sizeof(m));
bzero(f, sizeof(f));
maxuid = maxgid = maxmode = maxflags = 0;
for (; p; p = p->fts_link) {
if (!dflag || (dflag && S_ISDIR(p->fts_statp->st_mode))) {
smode = p->fts_statp->st_mode & MBITS;
if (smode < MAXMODE && ++m[smode] > maxmode) {
savemode = smode;
maxmode = m[smode];
}
sgid = p->fts_statp->st_gid;
if (sgid < MAXGID && ++g[sgid] > maxgid) {
savegid = sgid;
maxgid = g[sgid];
}
suid = p->fts_statp->st_uid;
if (suid < MAXUID && ++u[suid] > maxuid) {
saveuid = suid;
maxuid = u[suid];
}
/*
* XXX
* note that the below will break when file flags
* are extended beyond the first 4 bytes of each
* half word of the flags
*/
#define FLAGS2IDX(f) ((f & 0xf) | ((f >> 12) & 0xf0))
sflags = p->fts_statp->st_flags;
if (FLAGS2IDX(sflags) < MAXFLAGS &&
++f[FLAGS2IDX(sflags)] > maxflags) {
saveflags = sflags;
maxflags = f[FLAGS2IDX(sflags)];
}
}
}
/*
* If the /set record is the same as the last one we do not need to output
* a new one. So first we check to see if anything changed. Note that we
* always output a /set record for the first directory.
*/
if ((((keys & F_UNAME) | (keys & F_UID)) && (*puid != saveuid)) ||
(((keys & F_GNAME) | (keys & F_GID)) && (*pgid != savegid)) ||
((keys & F_MODE) && (*pmode != savemode)) ||
((keys & F_FLAGS) && (*pflags != saveflags)) ||
(first)) {
first = 0;
if (dflag)
(void)printf("/set type=dir");
else
(void)printf("/set type=file");
if (keys & F_UNAME) {
pw = getpwuid(saveuid);
if (pw != NULL)
(void)printf(" uname=%s", pw->pw_name);
else if (wflag)
warnx( "Could not get uname for uid=%u", saveuid);
else
errx(1, "Could not get uname for uid=%u", saveuid);
}
if (keys & F_UID)
(void)printf(" uid=%lu", (u_long)saveuid);
if (keys & F_GNAME) {
gr = getgrgid(savegid);
if (gr != NULL)
(void)printf(" gname=%s", gr->gr_name);
else if (wflag)
warnx("Could not get gname for gid=%u", savegid);
else
errx(1, "Could not get gname for gid=%u", savegid);
}
if (keys & F_GID)
(void)printf(" gid=%lu", (u_long)savegid);
if (keys & F_MODE)
(void)printf(" mode=%#o", savemode);
if (keys & F_NLINK)
(void)printf(" nlink=1");
if (keys & F_FLAGS) {
fflags = flags_to_string(saveflags);
(void)printf(" flags=%s", fflags);
free(fflags);
}
(void)printf("\n");
*puid = saveuid;
*pgid = savegid;
*pmode = savemode;
*pflags = saveflags;
}
return (0);
}
static int
dsort(const FTSENT * const *a, const FTSENT * const *b)
{
if (S_ISDIR((*a)->fts_statp->st_mode)) {
if (!S_ISDIR((*b)->fts_statp->st_mode))
return (1);
} else if (S_ISDIR((*b)->fts_statp->st_mode))
return (-1);
return (strcmp((*a)->fts_name, (*b)->fts_name));
}
#include <stdarg.h>
void
output(int indent, int *offset, const char *fmt, ...)
{
va_list ap;
char buf[1024];
va_start(ap, fmt);
(void)vsnprintf(buf, sizeof(buf), fmt, ap);
va_end(ap);
if (*offset + strlen(buf) > MAXLINELEN - 3) {
(void)printf(" \\\n%*s", INDENTNAMELEN + indent, "");
*offset = INDENTNAMELEN + indent;
}
*offset += printf(" %s", buf) + 1;
}
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