diff options
| author | Rob Landley <rob@landley.net> | 2019-05-19 13:39:01 -0500 |
|---|---|---|
| committer | Rob Landley <rob@landley.net> | 2019-05-19 13:39:01 -0500 |
| commit | 6534204a7ac32fe8009d0d14189dfa86826b14a5 (patch) | |
| tree | 68b59f45b51755a0ca4ce1ffb86dc98f20a36f71 /toys | |
| parent | abb373990e44421b2437e40cc0082be960ce24f0 (diff) | |
| download | toybox-6534204a7ac32fe8009d0d14189dfa86826b14a5.tar.gz | |
Fix tar --sparse generation of extension block.
Diffstat (limited to 'toys')
| -rw-r--r-- | toys/posix/tar.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/toys/posix/tar.c b/toys/posix/tar.c index 1cece411..ecc378b7 100644 --- a/toys/posix/tar.c +++ b/toys/posix/tar.c @@ -312,10 +312,12 @@ static int add_to_tar(struct dirtree *node) while ((lo = lseek(fd, ld, SEEK_HOLE)) != -1) { if (!(TT.sparselen&511)) TT.sparse = xrealloc(TT.sparse, (TT.sparselen+514)*sizeof(long long)); - TT.sparse[TT.sparselen++] = ld; - len += TT.sparse[TT.sparselen++] = lo-ld; + if (ld != lo) { + TT.sparse[TT.sparselen++] = ld; + len += TT.sparse[TT.sparselen++] = lo-ld; + } if (lo == st->st_size) { - if (TT.sparselen == 2) TT.sparselen = 0; + if (TT.sparselen<=2) TT.sparselen = 0; else { // Gratuitous extra entry for compatibility with other versions TT.sparse[TT.sparselen++] = lo; @@ -358,7 +360,10 @@ static int add_to_tar(struct dirtree *node) int j = (i-8)%42; if (!j || i==TT.sparselen) { - if (i!=8) xwrite(TT.fd, buf, 512); + if (i!=8) { + if (i!=TT.sparselen) buf[504] = 1; + xwrite(TT.fd, buf, 512); + } if (i==TT.sparselen) break; memset(buf, 0, sizeof(buf)); } @@ -455,7 +460,7 @@ static void sendfile_sparse(int fd) used += sent; if (len) { error: - perror_msg(0); + if (fd!=1) perror_msg(0); skippy(TT.hdr.size-used); break; |