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 <rpm/rpmio.h>
13 #include <rpm/rpmlog.h>
22 * Convert string to unsigned integer (with buffer size check).
23 * @param str input string
24 * @retval endptr address of 1st character not processed
25 * @param base numerical conversion base
26 * @param num max no. of bytes to read
27 * @return converted integer
29 static unsigned long strntoul(const char *str,char **endptr, int base, size_t num)
31 char buf[num+1], * end;
34 strncpy(buf, str, num);
37 ret = strtoul(buf, &end, base);
39 *endptr = ((char *)str) + (end - buf); /* XXX discards const */
41 *endptr = ((char *)str) + strlen(buf);
46 #define GET_NUM_FIELD(phys, log) \
48 log = strntoul(phys, &end, 16, sizeof(phys)); \
50 if ( (end - phys) != sizeof(phys) ) return CPIOERR_BAD_HEADER;
51 #define SET_NUM_FIELD(phys, val, space) \
52 sprintf(space, "%8.8lx", (unsigned long) (val)); \
54 memcpy(phys, space, 8) \
56 int cpioTrailerWrite(FSM_t fsm)
58 struct cpioCrcPhysicalHeader * hdr =
59 (struct cpioCrcPhysicalHeader *)fsm->rdbuf;
62 memset(hdr, '0', PHYS_HDR_SIZE);
63 memcpy(hdr->magic, CPIO_NEWC_MAGIC, sizeof(hdr->magic));
64 memcpy(hdr->nlink, "00000001", 8);
65 memcpy(hdr->namesize, "0000000b", 8);
66 memcpy(fsm->rdbuf + PHYS_HDR_SIZE, CPIO_TRAILER, sizeof(CPIO_TRAILER));
68 /* XXX DWRITE uses rdnb for I/O length. */
69 fsm->rdnb = PHYS_HDR_SIZE + sizeof(CPIO_TRAILER);
70 rc = fsmNext(fsm, FSM_DWRITE);
73 * GNU cpio pads to 512 bytes here, but we don't. This may matter for
74 * tape device(s) and/or concatenated cpio archives. <shrug>
77 rc = fsmNext(fsm, FSM_PAD);
82 int cpioHeaderWrite(FSM_t fsm, struct stat * st)
84 struct cpioCrcPhysicalHeader * hdr = (struct cpioCrcPhysicalHeader *)fsm->rdbuf;
90 memcpy(hdr->magic, CPIO_NEWC_MAGIC, sizeof(hdr->magic));
91 SET_NUM_FIELD(hdr->inode, st->st_ino, field);
92 SET_NUM_FIELD(hdr->mode, st->st_mode, field);
93 SET_NUM_FIELD(hdr->uid, st->st_uid, field);
94 SET_NUM_FIELD(hdr->gid, st->st_gid, field);
95 SET_NUM_FIELD(hdr->nlink, st->st_nlink, field);
96 SET_NUM_FIELD(hdr->mtime, st->st_mtime, field);
97 SET_NUM_FIELD(hdr->filesize, st->st_size, field);
99 dev = major(st->st_dev); SET_NUM_FIELD(hdr->devMajor, dev, field);
100 dev = minor(st->st_dev); SET_NUM_FIELD(hdr->devMinor, dev, field);
101 dev = major(st->st_rdev); SET_NUM_FIELD(hdr->rdevMajor, dev, field);
102 dev = minor(st->st_rdev); SET_NUM_FIELD(hdr->rdevMinor, dev, field);
104 len = strlen(fsm->path) + 1; SET_NUM_FIELD(hdr->namesize, len, field);
105 memcpy(hdr->checksum, "00000000", 8);
106 memcpy(fsm->rdbuf + PHYS_HDR_SIZE, fsm->path, len);
108 /* XXX DWRITE uses rdnb for I/O length. */
109 fsm->rdnb = PHYS_HDR_SIZE + len;
110 rc = fsmNext(fsm, FSM_DWRITE);
111 if (!rc && fsm->rdnb != fsm->wrnb)
112 rc = CPIOERR_WRITE_FAILED;
114 rc = fsmNext(fsm, FSM_PAD);
118 int cpioHeaderRead(FSM_t fsm, struct stat * st)
120 struct cpioCrcPhysicalHeader hdr;
123 unsigned int major, minor;
126 fsm->wrlen = PHYS_HDR_SIZE;
127 rc = fsmNext(fsm, FSM_DREAD);
128 if (!rc && fsm->rdnb != fsm->wrlen)
129 rc = CPIOERR_READ_FAILED;
131 memcpy(&hdr, fsm->wrbuf, fsm->rdnb);
133 if (strncmp(CPIO_CRC_MAGIC, hdr.magic, sizeof(CPIO_CRC_MAGIC)-1) &&
134 strncmp(CPIO_NEWC_MAGIC, hdr.magic, sizeof(CPIO_NEWC_MAGIC)-1))
135 return CPIOERR_BAD_MAGIC;
137 GET_NUM_FIELD(hdr.inode, st->st_ino);
138 GET_NUM_FIELD(hdr.mode, st->st_mode);
139 GET_NUM_FIELD(hdr.uid, st->st_uid);
140 GET_NUM_FIELD(hdr.gid, st->st_gid);
141 GET_NUM_FIELD(hdr.nlink, st->st_nlink);
142 GET_NUM_FIELD(hdr.mtime, st->st_mtime);
143 GET_NUM_FIELD(hdr.filesize, st->st_size);
145 GET_NUM_FIELD(hdr.devMajor, major);
146 GET_NUM_FIELD(hdr.devMinor, minor);
147 st->st_dev = makedev(major, minor);
149 GET_NUM_FIELD(hdr.rdevMajor, major);
150 GET_NUM_FIELD(hdr.rdevMinor, minor);
151 st->st_rdev = makedev(major, minor);
153 GET_NUM_FIELD(hdr.namesize, nameSize);
154 if (nameSize >= fsm->wrsize)
155 return CPIOERR_BAD_HEADER;
157 { char * t = xmalloc(nameSize + 1);
158 fsm->wrlen = nameSize;
159 rc = fsmNext(fsm, FSM_DREAD);
160 if (!rc && fsm->rdnb != fsm->wrlen)
161 rc = CPIOERR_BAD_HEADER;
167 memcpy(t, fsm->wrbuf, fsm->rdnb);
175 const char * cpioStrerror(int rc)
177 static char msg[256];
182 strcpy(msg, "cpio: ");
185 char *t = msg + strlen(msg);
186 sprintf(t, _("(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;
211 case CPIOERR_LSETFCON_FAILED: s = "lsetfilecon"; break;
212 case CPIOERR_SETCAP_FAILED: s = "cap_set_file"; break;
214 case CPIOERR_HDR_SIZE: s = _("Header size too big"); break;
215 case CPIOERR_UNKNOWN_FILETYPE: s = _("Unknown file type"); break;
216 case CPIOERR_MISSING_HARDLINK: s = _("Missing hard link(s)"); break;
217 case CPIOERR_DIGEST_MISMATCH: s = _("Digest mismatch"); break;
218 case CPIOERR_INTERNAL: s = _("Internal error"); break;
219 case CPIOERR_UNMAPPED_FILE: s = _("Archive file not in header"); break;
220 case CPIOERR_ENOENT: s = strerror(ENOENT); break;
221 case CPIOERR_ENOTEMPTY: s = strerror(ENOTEMPTY); break;
224 l = sizeof(msg) - strlen(msg) - 1;
226 if (l > 0) strncat(msg, s, l);
229 if ((rc & CPIOERR_CHECK_ERRNO) && myerrno) {
231 if (l > 0) strncat(msg, s, l);
233 if (l > 0) strncat(msg, strerror(myerrno), l);