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
12 #include <rpmio_internal.h>
24 * Convert string to unsigned integer (with buffer size check).
25 * @param str input string
26 * @retval endptr address of 1st character not processed
27 * @param base numerical conversion base
28 * @param num max no. of bytes to read
29 * @return converted integer
31 static int strntoul(const char *str, /*@out@*/char **endptr, int base, int num)
32 /*@modifies *endptr @*/
37 buf = alloca(num + 1);
38 strncpy(buf, str, num);
41 ret = strtoul(buf, &end, base);
43 *endptr = ((char *)str) + (end - buf); /* XXX discards const */
45 *endptr = ((char *)str) + strlen(buf);
50 #define GET_NUM_FIELD(phys, log) \
51 log = strntoul(phys, &end, 16, sizeof(phys)); \
52 if ( (end - phys) != sizeof(phys) ) return CPIOERR_BAD_HEADER;
53 #define SET_NUM_FIELD(phys, val, space) \
54 sprintf(space, "%8.8lx", (unsigned long) (val)); \
55 memcpy(phys, space, 8);
57 int cpioTrailerWrite(FSM_t fsm)
59 struct cpioCrcPhysicalHeader * hdr =
60 (struct cpioCrcPhysicalHeader *)fsm->rdbuf;
63 memset(hdr, '0', PHYS_HDR_SIZE);
64 memcpy(hdr->magic, CPIO_NEWC_MAGIC, sizeof(hdr->magic));
65 memcpy(hdr->nlink, "00000001", 8);
66 memcpy(hdr->namesize, "0000000b", 8);
67 memcpy(fsm->rdbuf + PHYS_HDR_SIZE, CPIO_TRAILER, sizeof(CPIO_TRAILER));
69 /* XXX DWRITE uses rdnb for I/O length. */
70 fsm->rdnb = PHYS_HDR_SIZE + sizeof(CPIO_TRAILER);
71 rc = fsmStage(fsm, FSM_DWRITE);
74 * GNU cpio pads to 512 bytes here, but we don't. This may matter for
75 * tape device(s) and/or concatenated cpio archives. <shrug>
78 rc = fsmStage(fsm, FSM_PAD);
83 int cpioHeaderWrite(FSM_t fsm, struct stat * st)
85 struct cpioCrcPhysicalHeader * hdr = (struct cpioCrcPhysicalHeader *)fsm->rdbuf;
91 memcpy(hdr->magic, CPIO_NEWC_MAGIC, sizeof(hdr->magic));
92 SET_NUM_FIELD(hdr->inode, st->st_ino, field);
93 SET_NUM_FIELD(hdr->mode, st->st_mode, field);
94 SET_NUM_FIELD(hdr->uid, st->st_uid, field);
95 SET_NUM_FIELD(hdr->gid, st->st_gid, field);
96 SET_NUM_FIELD(hdr->nlink, st->st_nlink, field);
97 SET_NUM_FIELD(hdr->mtime, st->st_mtime, field);
98 SET_NUM_FIELD(hdr->filesize, st->st_size, field);
100 dev = major((unsigned)st->st_dev); SET_NUM_FIELD(hdr->devMajor, dev, field);
101 dev = minor((unsigned)st->st_dev); SET_NUM_FIELD(hdr->devMinor, dev, field);
102 dev = major((unsigned)st->st_rdev); SET_NUM_FIELD(hdr->rdevMajor, dev, field);
103 dev = minor((unsigned)st->st_rdev); SET_NUM_FIELD(hdr->rdevMinor, dev, field);
105 len = strlen(fsm->path) + 1; SET_NUM_FIELD(hdr->namesize, len, field);
106 memcpy(hdr->checksum, "00000000", 8);
107 memcpy(fsm->rdbuf + PHYS_HDR_SIZE, fsm->path, len);
109 /* XXX DWRITE uses rdnb for I/O length. */
110 fsm->rdnb = PHYS_HDR_SIZE + len;
111 rc = fsmStage(fsm, FSM_DWRITE);
112 if (!rc && fsm->rdnb != fsm->wrnb)
113 rc = CPIOERR_WRITE_FAILED;
115 rc = fsmStage(fsm, FSM_PAD);
119 int cpioHeaderRead(FSM_t fsm, struct stat * st)
120 /*@modifies fsm, *st @*/
122 struct cpioCrcPhysicalHeader hdr;
128 fsm->wrlen = PHYS_HDR_SIZE;
129 rc = fsmStage(fsm, FSM_DREAD);
130 if (!rc && fsm->rdnb != fsm->wrlen)
131 rc = CPIOERR_READ_FAILED;
133 memcpy(&hdr, fsm->wrbuf, fsm->rdnb);
135 if (strncmp(CPIO_CRC_MAGIC, hdr.magic, sizeof(CPIO_CRC_MAGIC)-1) &&
136 strncmp(CPIO_NEWC_MAGIC, hdr.magic, sizeof(CPIO_NEWC_MAGIC)-1))
137 return CPIOERR_BAD_MAGIC;
139 GET_NUM_FIELD(hdr.inode, st->st_ino);
140 GET_NUM_FIELD(hdr.mode, st->st_mode);
141 GET_NUM_FIELD(hdr.uid, st->st_uid);
142 GET_NUM_FIELD(hdr.gid, st->st_gid);
143 GET_NUM_FIELD(hdr.nlink, st->st_nlink);
144 GET_NUM_FIELD(hdr.mtime, st->st_mtime);
145 GET_NUM_FIELD(hdr.filesize, st->st_size);
147 GET_NUM_FIELD(hdr.devMajor, major);
148 GET_NUM_FIELD(hdr.devMinor, minor);
149 /*@-shiftimplementation@*/
150 st->st_dev = makedev(major, minor);
151 /*@=shiftimplementation@*/
153 GET_NUM_FIELD(hdr.rdevMajor, major);
154 GET_NUM_FIELD(hdr.rdevMinor, minor);
155 /*@-shiftimplementation@*/
156 st->st_rdev = makedev(major, minor);
157 /*@=shiftimplementation@*/
159 GET_NUM_FIELD(hdr.namesize, nameSize);
160 if (nameSize >= fsm->wrsize)
161 return CPIOERR_BAD_HEADER;
163 { char * t = xmalloc(nameSize + 1);
164 fsm->wrlen = nameSize;
165 rc = fsmStage(fsm, FSM_DREAD);
166 if (!rc && fsm->rdnb != fsm->wrlen)
167 rc = CPIOERR_BAD_HEADER;
173 memcpy(t, fsm->wrbuf, fsm->rdnb);
181 const char *const cpioStrerror(int rc)
183 static char msg[256];
185 int l, myerrno = errno;
187 strcpy(msg, "cpio: ");
191 s = msg + strlen(msg);
192 sprintf(s, _("(error 0x%x)"), (unsigned)rc);
195 case CPIOERR_BAD_MAGIC: s = _("Bad magic"); break;
196 case CPIOERR_BAD_HEADER: s = _("Bad/unreadable header");break;
198 case CPIOERR_OPEN_FAILED: s = "open"; break;
199 case CPIOERR_CHMOD_FAILED: s = "chmod"; break;
200 case CPIOERR_CHOWN_FAILED: s = "chown"; break;
201 case CPIOERR_WRITE_FAILED: s = "write"; break;
202 case CPIOERR_UTIME_FAILED: s = "utime"; break;
203 case CPIOERR_UNLINK_FAILED: s = "unlink"; break;
204 case CPIOERR_RENAME_FAILED: s = "rename"; break;
205 case CPIOERR_SYMLINK_FAILED: s = "symlink"; break;
206 case CPIOERR_STAT_FAILED: s = "stat"; break;
207 case CPIOERR_LSTAT_FAILED: s = "lstat"; break;
208 case CPIOERR_MKDIR_FAILED: s = "mkdir"; break;
209 case CPIOERR_RMDIR_FAILED: s = "rmdir"; break;
210 case CPIOERR_MKNOD_FAILED: s = "mknod"; break;
211 case CPIOERR_MKFIFO_FAILED: s = "mkfifo"; break;
212 case CPIOERR_LINK_FAILED: s = "link"; break;
213 case CPIOERR_READLINK_FAILED: s = "readlink"; break;
214 case CPIOERR_READ_FAILED: s = "read"; break;
215 case CPIOERR_COPY_FAILED: s = "copy"; break;
217 case CPIOERR_HDR_SIZE: s = _("Header size too big"); break;
218 case CPIOERR_UNKNOWN_FILETYPE: s = _("Unknown file type"); break;
219 case CPIOERR_MISSING_HARDLINK: s = _("Missing hard link(s)"); break;
220 case CPIOERR_MD5SUM_MISMATCH: s = _("MD5 sum mismatch"); break;
221 case CPIOERR_INTERNAL: s = _("Internal error"); break;
222 case CPIOERR_UNMAPPED_FILE: s = _("Archive file not in header"); break;
226 l = sizeof(msg) - strlen(msg) - 1;
228 if (l > 0) strncat(msg, s, l);
232 if ((rc & CPIOERR_CHECK_ERRNO) && myerrno) {
234 if (l > 0) strncat(msg, s, l);
236 if (l > 0) strncat(msg, strerror(myerrno), l);