diff options
Diffstat (limited to 'src/libs/3rdparty/libarchive/archive_write_set_format_pax.c')
| -rw-r--r-- | src/libs/3rdparty/libarchive/archive_write_set_format_pax.c | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/src/libs/3rdparty/libarchive/archive_write_set_format_pax.c b/src/libs/3rdparty/libarchive/archive_write_set_format_pax.c index cf1f4770e..c9c159164 100644 --- a/src/libs/3rdparty/libarchive/archive_write_set_format_pax.c +++ b/src/libs/3rdparty/libarchive/archive_write_set_format_pax.c @@ -100,6 +100,7 @@ static int has_non_ASCII(const char *); static void sparse_list_clear(struct pax *); static int sparse_list_add(struct pax *, int64_t, int64_t); static char *url_encode(const char *in); +static time_t get_ustar_max_mtime(void); /* * Set output format to 'restricted pax' format. @@ -595,6 +596,8 @@ archive_write_pax_header(struct archive_write *a, need_extension = 0; pax = (struct pax *)a->format_data; + const time_t ustar_max_mtime = get_ustar_max_mtime(); + /* Sanity check. */ if (archive_entry_pathname(entry_original) == NULL) { archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, @@ -1116,16 +1119,13 @@ archive_write_pax_header(struct archive_write *a, } /* - * Technically, the mtime field in the ustar header can - * support 33 bits, but many platforms use signed 32-bit time - * values. The cutoff of 0x7fffffff here is a compromise. * Yes, this check is duplicated just below; this helps to * avoid writing an mtime attribute just to handle a * high-resolution timestamp in "restricted pax" mode. */ if (!need_extension && ((archive_entry_mtime(entry_main) < 0) - || (archive_entry_mtime(entry_main) >= 0x7fffffff))) + || (archive_entry_mtime(entry_main) >= ustar_max_mtime))) need_extension = 1; /* I use a star-compatible file flag attribute. */ @@ -1190,7 +1190,7 @@ archive_write_pax_header(struct archive_write *a, if (a->archive.archive_format != ARCHIVE_FORMAT_TAR_PAX_RESTRICTED || need_extension) { if (archive_entry_mtime(entry_main) < 0 || - archive_entry_mtime(entry_main) >= 0x7fffffff || + archive_entry_mtime(entry_main) >= ustar_max_mtime || archive_entry_mtime_nsec(entry_main) != 0) add_pax_attr_time(&(pax->pax_header), "mtime", archive_entry_mtime(entry_main), @@ -1428,7 +1428,7 @@ archive_write_pax_header(struct archive_write *a, /* Copy mtime, but clip to ustar limits. */ s = archive_entry_mtime(entry_main); if (s < 0) { s = 0; } - if (s >= 0x7fffffff) { s = 0x7fffffff; } + if (s > ustar_max_mtime) { s = ustar_max_mtime; } archive_entry_set_mtime(pax_attr_entry, s, 0); /* Standard ustar doesn't support atime. */ @@ -2046,3 +2046,18 @@ sparse_list_add(struct pax *pax, int64_t offset, int64_t length) return (_sparse_list_add_block(pax, offset, length, 0)); } +static time_t +get_ustar_max_mtime(void) +{ + /* + * Technically, the mtime field in the ustar header can + * support 33 bits. We are using all of them to keep + * tar/test/test_option_C_mtree.c simple and passing after 2038. + * For platforms that use signed 32-bit time values we + * use the 32-bit maximum. + */ + if (sizeof(time_t) > sizeof(int32_t)) + return (time_t)0x1ffffffff; + else + return (time_t)0x7fffffff; +} |