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-rw-r--r--toys/pending/cpio.c213
1 files changed, 0 insertions, 213 deletions
diff --git a/toys/pending/cpio.c b/toys/pending/cpio.c
deleted file mode 100644
index 18877c1f..00000000
--- a/toys/pending/cpio.c
+++ /dev/null
@@ -1,213 +0,0 @@
-/* cpio.c - a basic cpio
- *
- * Written 2013 AD by Isaac Dunham; this code is placed under the
- * same license as toybox or as CC0, at your option.
- *
- * http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/cpio.html
- * and http://pubs.opengroup.org/onlinepubs/7908799/xcu/cpio.html
- *
- * Yes, that's SUSv2, the newer standards removed it around the time RPM
- * and initramfs started heavily using this archive format.
- *
- * Modern cpio expanded header to 110 bytes (first field 6 bytes, rest are 8).
- * In order: magic ino mode uid gid nlink mtime filesize devmajor devminor
- * rdevmajor rdevminor namesize check
-
-USE_CPIO(NEWTOY(cpio, "duH:i|t|F:o|v(verbose)[!io][!ot]", TOYFLAG_BIN))
-
-config CPIO
- bool "cpio"
- default n
- help
- usage: cpio -{o|t|i} [-v] [--verbose] [-F FILE] [ignored: -du -H newc]
-
- copy files into and out of a "newc" format cpio archive
-
- -F FILE use archive FILE instead of stdin/stdout
- -i extract from archive into file system (stdin=archive)
- -o create archive (stdin=list of files, stdout=archive)
- -t test files (list only, stdin=archive, stdout=list of files)
- -v verbose (list files during create/extract)
-*/
-
-#define FOR_cpio
-#include "toys.h"
-
-GLOBALS(
- char *archive;
- char *fmt;
-)
-
-// Read strings, tail padded to 4 byte alignment. Argument "align" is amount
-// by which start of string isn't aligned (usually 0).
-static char *strpad(int fd, unsigned len, unsigned align)
-{
- char *str;
-
- align = (align + len) & 3;
- if (align) len += (4-align);
-
- xreadall(fd, str = xmalloc(len+1), len);
- str[len]=0; // redundant, in case archive is bad
-
- return str;
-}
-
-//convert hex to uint; mostly to allow using bits of non-terminated strings
-unsigned x8u(char *hex)
-{
- unsigned val, inpos = 8, outpos;
- char pattern[6];
-
- while (*hex == '0') {
- hex++;
- if (!--inpos) return 0;
- }
- // Because scanf gratuitously treats %*X differently than printf does.
- sprintf(pattern, "%%%dX%%n", inpos);
- sscanf(hex, pattern, &val, &outpos);
- if (inpos != outpos) error_exit("bad header");
-
- return val;
-}
-
-void cpio_main(void)
-{
- int afd;
-
- // Subtle bit: FLAG_o is 1 so we can just use it to select stdin/stdout.
-
- afd = toys.optflags & FLAG_o;
- if (TT.archive) {
- int perm = (toys.optflags & FLAG_o) ? O_CREAT|O_WRONLY|O_TRUNC : O_RDONLY;
-
- afd = xcreate(TT.archive, perm, 0644);
- }
-
- // read cpio archive
-
- if (toys.optflags & (FLAG_i|FLAG_t)) for (;;) {
- char *name, *tofree, *data;
- unsigned size, mode;
- int test = toys.optflags & FLAG_t, err = 0;
-
- // Read header and name.
- xreadall(afd, toybuf, 110);
- tofree = name = strpad(afd, x8u(toybuf+94), 110);
- if (!strcmp("TRAILER!!!", name)) break;
-
- // If you want to extract absolute paths, "cd /" and run cpio.
- while (*name == '/') name++;
-
- // Align to 4 bytes. Note header is 110 bytes which is 2 bytes over.
-
- size = x8u(toybuf+54);
- mode = x8u(toybuf+14);
-
- if (toys.optflags & (FLAG_t|FLAG_v)) puts(name);
-
- if (!test && strrchr(name, '/') && mkpathat(AT_FDCWD, name, 0, 2)) {
- perror_msg("mkpath '%s'", name);
- test++;
- }
-
- // Consume entire record even if it couldn't create file, so we're
- // properly aligned with next file.
-
- if (S_ISDIR(mode)) {
- if (!test) err = mkdir(name, mode);
- } else if (S_ISLNK(mode)) {
- data = strpad(afd, size, 0);
- if (!test) err = symlink(data, name);
- } else if (S_ISREG(mode)) {
- int fd;
-
- // If write fails, we still need to read/discard data to continue with
- // archive. Since doing so overwrites errno, report error now
- fd = test ? 0 : open(name, O_CREAT|O_WRONLY|O_TRUNC|O_NOFOLLOW, mode);
- if (fd < 0) {
- perror_msg("create %s", name);
- test++;
- }
-
- data = toybuf;
- while (size) {
- if (size < sizeof(toybuf)) data = strpad(afd, size, 0);
- else xreadall(afd, toybuf, sizeof(toybuf));
- if (!test) xwrite(fd, data, data == toybuf ? sizeof(toybuf) : size);
- if (data != toybuf) {
- free(data);
- break;
- }
- size -= sizeof(toybuf);
- }
- close(fd);
- } else if (!test)
- err = mknod(name, mode, makedev(x8u(toybuf+62), x8u(toybuf+70)));
-
- if (err<0) perror_msg("create '%s'", name);
- free(tofree);
-
- // Output cpio archive
-
- } else {
- char *name = 0;
- size_t size = 0;
-
- for (;;) {
- struct stat st;
- unsigned nlen = strlen(name)+1, error = 0, zero = 0;
- int len, fd = -1;
- ssize_t llen;
-
- len = getline(&name, &size, stdin);
- if (len<1) break;
- if (name[len-1] == '\n') name[--len] = 0;
- if (lstat(name, &st)
- || (S_ISREG(st.st_mode) && (fd = open(name, O_RDONLY))<0))
- {
- perror_msg("%s", name);
- continue;
- }
-
- if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode)) st.st_size = 0;
- if (st.st_size >> 32) perror_msg("skipping >2G file '%s'", name);
- else {
- llen = sprintf(toybuf,
- "070701%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X",
- (int)st.st_ino, st.st_mode, st.st_uid, st.st_gid, (int)st.st_nlink,
- (int)st.st_mtime, (int)st.st_size, major(st.st_dev),
- minor(st.st_dev), major(st.st_rdev), minor(st.st_rdev), nlen, 0);
- xwrite(afd, toybuf, llen);
- xwrite(afd, name, nlen);
-
- // NUL Pad header up to 4 multiple bytes.
- llen = (llen + nlen) & 3;
- if (llen) xwrite(afd, &zero, 4-llen);
-
- // Write out body for symlink or regular file
- llen = st.st_size;
- if (S_ISLNK(st.st_mode)) {
- if (readlink(name, toybuf, sizeof(toybuf)-1) == llen)
- xwrite(afd, toybuf, llen);
- else perror_msg("readlink '%s'", name);
- } else while (llen) {
- nlen = llen > sizeof(toybuf) ? sizeof(toybuf) : llen;
- llen -= nlen;
- // If read fails, write anyway (already wrote size in header)
- if (nlen != readall(fd, toybuf, nlen))
- if (!error++) perror_msg("bad read from file '%s'", name);
- xwrite(afd, toybuf, nlen);
- }
- llen = st.st_size & 3;
- if (llen) write(afd, &zero, 4-llen);
- }
- close(fd);
- }
- free(name);
-
- xwrite(afd, toybuf,
- sprintf(toybuf, "070701%040X%056X%08XTRAILER!!!%c%c%c",
- 1, 0x0b, 0, 0, 0, 0));
- }
-}
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