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Add .PLEDGE/.CPU/.MEMORY/etc. to Landlock Make 1.2

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This commit is contained in:
Justine Tunney 2022-08-14 20:16:44 -07:00
parent 6c0bbfac4a
commit 7ab15e0b23
20 changed files with 494 additions and 329 deletions
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10
tool/build/lib/syscall.c
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@ -254,7 +254,9 @@ static int OpMunmap(struct Machine *m, int64_t virt, uint64_t size) {
static int64_t OpMmap(struct Machine *m, int64_t virt, size_t size, int prot,
int flags, int fd, int64_t offset) {
int e;
void *tmp;
ssize_t rc;
uint64_t key;
VERBOSEF("MMAP%s %012lx %,ld %#x %#x %d %#lx", GetSimulated(), virt, size,
prot, flags, fd, offset);
@ -277,7 +279,13 @@ static int64_t OpMmap(struct Machine *m, int64_t virt, size_t size, int prot,
if (fd != -1 && !(flags & MAP_ANONYMOUS)) {
/* TODO: lazy file mappings */
CHECK_NOTNULL((tmp = malloc(size)));
CHECK_EQ(size, pread(fd, tmp, size, offset));
for (e = errno;;) {
rc = pread(fd, tmp, size, offset);
if (rc != -1) break;
CHECK_EQ(EINTR, errno);
errno = e;
}
CHECK_EQ(size, rc);
VirtualRecvWrite(m, virt, tmp, size);
free(tmp);
}