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Diffstat (limited to 'gitlab/issues/target_missing/host_missing/accel_missing/2004.toml')
| -rw-r--r-- | gitlab/issues/target_missing/host_missing/accel_missing/2004.toml | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/gitlab/issues/target_missing/host_missing/accel_missing/2004.toml b/gitlab/issues/target_missing/host_missing/accel_missing/2004.toml new file mode 100644 index 00000000..b3344780 --- /dev/null +++ b/gitlab/issues/target_missing/host_missing/accel_missing/2004.toml @@ -0,0 +1,45 @@ +id = 2004 +title = "do_guest_openat /proc interposition doesn't work for openat" +state = "opened" +created_at = "2023-11-24T17:09:30.952Z" +closed_at = "n/a" +labels = ["linux-user"] +url = "https://gitlab.com/qemu-project/qemu/-/issues/2004" +host-os = "All" +host-arch = "All" +qemu-version = "8.1.2" +guest-os = "Linux" +guest-arch = "All" +description = """For instance, trying with hppa emulated on top of x86: + +``` +$ hppa-linux-gnu-gcc test.c -o test +$ qemu-hppa-static ./test +``` + +One gets the host cpu information: + +``` +processor\t: 0 +vendor_id\t: GenuineIntel +cpu family\t: 6 +model\t\t: 142 +model name\t: Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz +[...] +``` + +while we would want to see the guest cpu information, like the test program does when `#if 0` is turned into `#if 1`: + +``` +processor\t: 0 +cpu family\t: PA-RISC 1.1e +cpu\t\t: PA7300LC (PCX-L2) +capabilities\t: os32 +model\t\t: 9000/778/B160L - Merlin L2 160 QEMU (9000/778/B160L) +``` + +This is because `do_guest_openat` only checks for the path, and does not look at `dirfd`, so it doesn't recognize that `openat(dirfd, "cpuinfo", O_RDONLY)` is actually opening a file in `/proc`. + +We could probably, when `dirfd` is not `AT_FDCWD`, try to `fstat()` it, open `/proc` with `O_DIRECTORY` and `fstat()` that too, and compare their `st_dev` and `st_ino`?""" +reproduce = "n/a" +additional = "n/a" |