On 3/5/21 9:31 AM, Nicolas Surbayrole wrote:
The guest binary and libraries are not always mapped with the
executable bit in the host process. The guest may read a
/proc/self/maps with no executable address range. The
patch bases the perm fields against the guest permission inside
Qemu.
Signed-off-by: Nicolas Surbayrole <nsurbayr...@quarkslab.com>
---
linux-user/syscall.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 389ec09764..77c40a274f 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -7888,9 +7888,9 @@ static int open_self_maps(void *cpu_env, int fd)
count = dprintf(fd, TARGET_ABI_FMT_ptr "-" TARGET_ABI_FMT_ptr
" %c%c%c%c %08" PRIx64 " %s %"PRId64,
h2g(min), h2g(max - 1) + 1,
- e->is_read ? 'r' : '-',
- e->is_write ? 'w' : '-',
- e->is_exec ? 'x' : '-',
+ (flags & PROT_READ) ? 'r' : '-',
+ (flags & PROT_WRITE) ? 'w' : '-',
+ (flags & PROT_EXEC) ? 'x' : '-',
Use PAGE_*, as those are the bits in flags. These three just happen to be the
same.
While we're at it, use PAGE_WRITE_ORG -- PAGE_WRITE may be removed on a rwx
page in which we've translated code.
r~
e->is_priv ? 'p' : '-',
(uint64_t) e->offset, e->dev, e->inode);
if (path) {
