mtd: improve support for reading input from a pipe. fixes sysupgrade
SVN-Revision: 12706
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parent
d58b9ba0d0
commit
5a0a3cbc00
1 changed files with 21 additions and 9 deletions
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@ -246,7 +246,7 @@ static int
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mtd_write(int imagefd, const char *mtd)
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{
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int fd, result;
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size_t r, w, e;
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ssize_t r, w, e;
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fd = mtd_check_open(mtd);
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if(fd < 0) {
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@ -263,11 +263,27 @@ mtd_write(int imagefd, const char *mtd)
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for (;;) {
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/* buffer may contain data already (from trx check) */
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r = read(imagefd, buf + buflen, erasesize - buflen);
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if (r < 0)
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break;
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do {
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r = read(imagefd, buf + buflen, erasesize - buflen);
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if (r < 0) {
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if ((errno == EINTR) || (errno == EAGAIN))
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continue;
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else {
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perror("read");
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break;
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}
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}
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buflen += r;
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if (r == 0) {
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fprintf(stderr, "No more data left\n");
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break;
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}
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buflen += r;
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} while (buflen < erasesize);
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if (buflen == 0)
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break;
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if (jffs2file) {
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if (memcmp(buf, JFFS2_EOF, sizeof(JFFS2_EOF)) == 0) {
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@ -309,10 +325,6 @@ mtd_write(int imagefd, const char *mtd)
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}
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w += buflen;
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/* not enough data - eof */
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if (buflen < erasesize)
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break;
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buflen = 0;
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}
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if (!quiet)
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