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cpio: error out if the file to be achived is >=4GB

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function                                             old     new   delta
.rodata                                           105715  105751     +36
cpio_o                                              1145    1167     +22
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 58/0)               Total: 58 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2025-04-21 04:41:50 +02:00
parent f13f68288f
commit 5f07327251
1 changed files with 6 additions and 0 deletions
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6
archival/cpio.c
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@ -350,6 +350,12 @@ static NOINLINE int cpio_o(void)
st.st_dev = st.st_rdev = 0; st.st_dev = st.st_rdev = 0;
#endif #endif
if (sizeof(st.st_size) > 4
&& st.st_size > (off_t)0xffffffff
) {
bb_error_msg_and_die("error: file '%s' is larger than 4GB", name);
}
bytes += printf("070701" bytes += printf("070701"
"%08X%08X%08X%08X%08X%08X%08X" "%08X%08X%08X%08X%08X%08X%08X"
"%08X%08X%08X%08X" /* GNU cpio uses uppercase hex */ "%08X%08X%08X%08X" /* GNU cpio uses uppercase hex */