From d8ee4405393045acfc5dcc9f6f87738dafd7ce21 Mon Sep 17 00:00:00 2001
From: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Date: Wed, 26 Jun 2019 12:09:27 +0200
Subject: Add support for negative timestamps in pax header
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
---
lib/tar/read_header.c | 27 +++++++++++++++++++++------
1 file changed, 21 insertions(+), 6 deletions(-)
(limited to 'lib/tar')
diff --git a/lib/tar/read_header.c b/lib/tar/read_header.c
index 131f5dc..ec48a3e 100644
--- a/lib/tar/read_header.c
+++ b/lib/tar/read_header.c
@@ -189,16 +189,31 @@ static int read_pax_header(int fd, uint64_t entsize, unsigned int *set_by_pax,
goto fail_errno;
*set_by_pax |= PAX_SLINK_TARGET;
} else if (!strncmp(line, "atime=", 6)) {
- pax_read_decimal(line + 6, &field);
- out->sb.st_atime = field;
+ if (line[6] == '-') {
+ pax_read_decimal(line + 7, &field);
+ out->sb.st_atime = -((int64_t)field);
+ } else {
+ pax_read_decimal(line + 6, &field);
+ out->sb.st_atime = field;
+ }
*set_by_pax |= PAX_ATIME;
} else if (!strncmp(line, "mtime=", 6)) {
- pax_read_decimal(line + 6, &field);
- out->sb.st_mtime = field;
+ if (line[6] == '-') {
+ pax_read_decimal(line + 7, &field);
+ out->sb.st_mtime = -((int64_t)field);
+ } else {
+ pax_read_decimal(line + 6, &field);
+ out->sb.st_mtime = field;
+ }
*set_by_pax |= PAX_MTIME;
} else if (!strncmp(line, "ctime=", 6)) {
- pax_read_decimal(line + 6, &field);
- out->sb.st_ctime = field;
+ if (line[6] == '-') {
+ pax_read_decimal(line + 7, &field);
+ out->sb.st_ctime = -((int64_t)field);
+ } else {
+ pax_read_decimal(line + 6, &field);
+ out->sb.st_ctime = field;
+ }
*set_by_pax |= PAX_CTIME;
}
}
--
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