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files: Don't restore pos when file doesn't support one

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It's not quite clean, but on dump non-seekable files dump 0xff...ff into
64-bit pos field of the image. Thus on restore we'd face an error in the
do_open_reg. In order not to have separate helper for non-seekable files
just skip the position restore for such.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Pavel Emelyanov
2013-08-17 03:56:18 +04:00
parent 4869da1781
commit 821621cdb7
1 changed files with 2 additions and 1 deletions
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3
files-reg.c
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@@ -529,7 +529,8 @@ static int do_open_reg(struct reg_file_info *rfi, void *arg)
return fd;
}
if (lseek(fd, rfi->rfe->pos, SEEK_SET) < 0) {
if ((rfi->rfe->pos != -1ULL) &&
lseek(fd, rfi->rfe->pos, SEEK_SET) < 0) {
pr_perror("Can't restore file pos");
close(fd);
return -1;