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Work around copy_file_range() bug in eCryptFs

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When programs like ar.ape and compile.ape are run on eCryptFs partitions
on Linux, copy_file_range() will fail with EINVAL which is wrong because
eCryptFs which doesn't support this system call, should raise EOPNOTSUPP

See https://github.com/jart/cosmopolitan/discussions/1305
This commit is contained in:
Justine Tunney 2024-09-29 16:31:48 -07:00
parent 12cc2de22e
commit fef24d622a
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GPG key ID: BE714B4575D6E328
5 changed files with 9 additions and 3 deletions
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2
libc/calls/copy_file_range.c
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@ -83,9 +83,11 @@ static void copy_file_range_init(void) {
* @return number of bytes transferred, or -1 w/ errno
* @raise EXDEV if source and destination are on different filesystems
* @raise EBADF if `infd` or `outfd` aren't open files or append-only
* @raise EOPNOTSUPP if filesystem doesn't support this operation
* @raise EPERM if `fdout` refers to an immutable file on Linux
* @raise ECANCELED if thread was cancelled in masked mode
* @raise EINVAL if ranges overlap or `flags` is non-zero
* @raise EINVAL on eCryptFs filesystems that have a bug
* @raise EFBIG if `setrlimit(RLIMIT_FSIZE)` is exceeded
* @raise EFAULT if one of the pointers memory is bad
* @raise ERANGE if overflow happens computing ranges

2
libc/calls/sig.c
View file

@ -424,7 +424,6 @@ textwindows void __sig_generate(int sig, int sic) {
(1ull << (sig - 1))) {
return;
}
BLOCK_SIGNALS;
_pthread_lock();
for (e = dll_first(_pthread_list); e; e = dll_next(_pthread_list, e)) {
pt = POSIXTHREAD_CONTAINER(e);
@ -462,7 +461,6 @@ textwindows void __sig_generate(int sig, int sic) {
atomic_fetch_or_explicit(__sig.process, 1ull << (sig - 1),
memory_order_relaxed);
}
ALLOW_SIGNALS;
}
static textwindows char *__sig_stpcpy(char *d, const char *s) {