3 * Handle cpio payloads within rpm packages.
5 * \warning FIXME: We don't translate between cpio and system mode bits! These
6 * should both be the same, but really odd things are going to happen if
19 * Convert string to unsigned integer (with buffer size check).
20 * @param str input string
21 * @retval endptr address of 1st character not processed
22 * @param base numerical conversion base
23 * @param num max no. of bytes to read
24 * @return converted integer
26 static int strntoul(const char *str, /*@out@*/char **endptr, int base, int num)
27 /*@modifies *endptr @*/
32 buf = alloca(num + 1);
33 strncpy(buf, str, num);
36 ret = strtoul(buf, &end, base);
38 *endptr = ((char *)str) + (end - buf); /* XXX discards const */
40 *endptr = ((char *)str) + strlen(buf);
45 #define GET_NUM_FIELD(phys, log) \
46 log = strntoul(phys, &end, 16, sizeof(phys)); \
47 if ( (end - phys) != sizeof(phys) ) return CPIOERR_BAD_HEADER;
48 #define SET_NUM_FIELD(phys, val, space) \
49 sprintf(space, "%8.8lx", (unsigned long) (val)); \
50 memcpy(phys, space, 8);
52 int cpioTrailerWrite(FSM_t fsm)
54 struct cpioCrcPhysicalHeader * hdr =
55 (struct cpioCrcPhysicalHeader *)fsm->rdbuf;
58 memset(hdr, '0', PHYS_HDR_SIZE);
59 memcpy(hdr->magic, CPIO_NEWC_MAGIC, sizeof(hdr->magic));
60 memcpy(hdr->nlink, "00000001", 8);
61 memcpy(hdr->namesize, "0000000b", 8);
62 memcpy(fsm->rdbuf + PHYS_HDR_SIZE, CPIO_TRAILER, sizeof(CPIO_TRAILER));
64 /* XXX DWRITE uses rdnb for I/O length. */
65 fsm->rdnb = PHYS_HDR_SIZE + sizeof(CPIO_TRAILER);
66 rc = fsmStage(fsm, FSM_DWRITE);
69 * GNU cpio pads to 512 bytes here, but we don't. This may matter for
70 * tape device(s) and/or concatenated cpio archives. <shrug>
73 rc = fsmStage(fsm, FSM_PAD);
78 int cpioHeaderWrite(FSM_t fsm, struct stat * st)
80 struct cpioCrcPhysicalHeader * hdr = (struct cpioCrcPhysicalHeader *)fsm->rdbuf;
86 memcpy(hdr->magic, CPIO_NEWC_MAGIC, sizeof(hdr->magic));
87 SET_NUM_FIELD(hdr->inode, st->st_ino, field);
88 SET_NUM_FIELD(hdr->mode, st->st_mode, field);
89 SET_NUM_FIELD(hdr->uid, st->st_uid, field);
90 SET_NUM_FIELD(hdr->gid, st->st_gid, field);
91 SET_NUM_FIELD(hdr->nlink, st->st_nlink, field);
92 SET_NUM_FIELD(hdr->mtime, st->st_mtime, field);
93 SET_NUM_FIELD(hdr->filesize, st->st_size, field);
95 dev = major((unsigned)st->st_dev); SET_NUM_FIELD(hdr->devMajor, dev, field);
96 dev = minor((unsigned)st->st_dev); SET_NUM_FIELD(hdr->devMinor, dev, field);
97 dev = major((unsigned)st->st_rdev); SET_NUM_FIELD(hdr->rdevMajor, dev, field);
98 dev = minor((unsigned)st->st_rdev); SET_NUM_FIELD(hdr->rdevMinor, dev, field);
100 len = strlen(fsm->path) + 1; SET_NUM_FIELD(hdr->namesize, len, field);
101 memcpy(hdr->checksum, "00000000", 8);
102 memcpy(fsm->rdbuf + PHYS_HDR_SIZE, fsm->path, len);
104 /* XXX DWRITE uses rdnb for I/O length. */
105 fsm->rdnb = PHYS_HDR_SIZE + len;
106 rc = fsmStage(fsm, FSM_DWRITE);
107 if (!rc && fsm->rdnb != fsm->wrnb)
108 rc = CPIOERR_WRITE_FAILED;
110 rc = fsmStage(fsm, FSM_PAD);
114 int cpioHeaderRead(FSM_t fsm, struct stat * st)
115 /*@modifies fsm, *st @*/
117 struct cpioCrcPhysicalHeader hdr;
123 fsm->wrlen = PHYS_HDR_SIZE;
124 rc = fsmStage(fsm, FSM_DREAD);
125 if (!rc && fsm->rdnb != fsm->wrlen)
126 rc = CPIOERR_READ_FAILED;
128 memcpy(&hdr, fsm->wrbuf, fsm->rdnb);
130 if (strncmp(CPIO_CRC_MAGIC, hdr.magic, sizeof(CPIO_CRC_MAGIC)-1) &&
131 strncmp(CPIO_NEWC_MAGIC, hdr.magic, sizeof(CPIO_NEWC_MAGIC)-1))
132 return CPIOERR_BAD_MAGIC;
134 GET_NUM_FIELD(hdr.inode, st->st_ino);
135 GET_NUM_FIELD(hdr.mode, st->st_mode);
136 GET_NUM_FIELD(hdr.uid, st->st_uid);
137 GET_NUM_FIELD(hdr.gid, st->st_gid);
138 GET_NUM_FIELD(hdr.nlink, st->st_nlink);
139 GET_NUM_FIELD(hdr.mtime, st->st_mtime);
140 GET_NUM_FIELD(hdr.filesize, st->st_size);
142 GET_NUM_FIELD(hdr.devMajor, major);
143 GET_NUM_FIELD(hdr.devMinor, minor);
144 /*@-shiftimplementation@*/
145 st->st_dev = makedev(major, minor);
146 /*@=shiftimplementation@*/
148 GET_NUM_FIELD(hdr.rdevMajor, major);
149 GET_NUM_FIELD(hdr.rdevMinor, minor);
150 /*@-shiftimplementation@*/
151 st->st_rdev = makedev(major, minor);
152 /*@=shiftimplementation@*/
154 GET_NUM_FIELD(hdr.namesize, nameSize);
155 if (nameSize >= fsm->wrsize)
156 return CPIOERR_BAD_HEADER;
158 { char * t = xmalloc(nameSize + 1);
159 fsm->wrlen = nameSize;
160 rc = fsmStage(fsm, FSM_DREAD);
161 if (!rc && fsm->rdnb != fsm->wrlen)
162 rc = CPIOERR_BAD_HEADER;
168 memcpy(t, fsm->wrbuf, fsm->rdnb);
176 const char *const cpioStrerror(int rc)
178 static char msg[256];
180 int l, myerrno = errno;
182 strcpy(msg, "cpio: ");
186 s = msg + strlen(msg);
187 sprintf(s, _("(error 0x%x)"), (unsigned)rc);
190 case CPIOERR_BAD_MAGIC: s = _("Bad magic"); break;
191 case CPIOERR_BAD_HEADER: s = _("Bad/unreadable header");break;
193 case CPIOERR_OPEN_FAILED: s = "open"; break;
194 case CPIOERR_CHMOD_FAILED: s = "chmod"; break;
195 case CPIOERR_CHOWN_FAILED: s = "chown"; break;
196 case CPIOERR_WRITE_FAILED: s = "write"; break;
197 case CPIOERR_UTIME_FAILED: s = "utime"; break;
198 case CPIOERR_UNLINK_FAILED: s = "unlink"; break;
199 case CPIOERR_RENAME_FAILED: s = "rename"; break;
200 case CPIOERR_SYMLINK_FAILED: s = "symlink"; break;
201 case CPIOERR_STAT_FAILED: s = "stat"; break;
202 case CPIOERR_LSTAT_FAILED: s = "lstat"; break;
203 case CPIOERR_MKDIR_FAILED: s = "mkdir"; break;
204 case CPIOERR_RMDIR_FAILED: s = "rmdir"; break;
205 case CPIOERR_MKNOD_FAILED: s = "mknod"; break;
206 case CPIOERR_MKFIFO_FAILED: s = "mkfifo"; break;
207 case CPIOERR_LINK_FAILED: s = "link"; break;
208 case CPIOERR_READLINK_FAILED: s = "readlink"; break;
209 case CPIOERR_READ_FAILED: s = "read"; break;
210 case CPIOERR_COPY_FAILED: s = "copy"; break;
212 case CPIOERR_HDR_SIZE: s = _("Header size too big"); break;
213 case CPIOERR_UNKNOWN_FILETYPE: s = _("Unknown file type"); break;
214 case CPIOERR_MISSING_HARDLINK: s = _("Missing hard link(s)"); break;
215 case CPIOERR_MD5SUM_MISMATCH: s = _("MD5 sum mismatch"); break;
216 case CPIOERR_INTERNAL: s = _("Internal error"); break;
217 case CPIOERR_UNMAPPED_FILE: s = _("Archive file not in header"); break;
221 l = sizeof(msg) - strlen(msg) - 1;
223 if (l > 0) strncat(msg, s, l);
227 if ((rc & CPIOERR_CHECK_ERRNO) && myerrno) {
229 if (l > 0) strncat(msg, s, l);
231 if (l > 0) strncat(msg, strerror(myerrno), l);