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[97.126.112.211]) by smtp.gmail.com with ESMTPSA id t3-v6sm33385584pgs.91.2018.05.31.15.49.16 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 31 May 2018 15:49:16 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Thu, 31 May 2018 15:49:08 -0700 Message-Id: <20180531224911.23725-4-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180531224911.23725-1-richard.henderson@linaro.org> References: <20180531224911.23725-1-richard.henderson@linaro.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400e:c00::243 Subject: [Qemu-devel] [PATCH 3/6] linux-user: Check is_hostfd in do_syscall X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, laurent@vivier.eu, evgreen@chromium.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" This is the vast majority of all fd inputs, but not all. Signed-off-by: Richard Henderson Reviewed-by: Laurent Vivier --- linux-user/syscall.c | 303 +++++++++++++++++++++++++++++++++++++++---- 1 file changed, 280 insertions(+), 23 deletions(-) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index d02c16bbc6..5339f0bc1c 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -8034,6 +8034,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, if (arg3 == 0) ret = 0; else { + if (is_hostfd(arg1)) { + goto ebadf; + } if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) goto efault; ret = get_errno(safe_read(arg1, p, arg3)); @@ -8045,6 +8048,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, } break; case TARGET_NR_write: + if (is_hostfd(arg1)) { + goto ebadf; + } if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) goto efault; if (fd_trans_target_to_host_data(arg1)) { @@ -8072,6 +8078,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, break; #endif case TARGET_NR_openat: + if (is_hostfd(arg1)) { + goto ebadf; + } if (!(p = lock_user_string(arg2))) goto efault; ret = get_errno(do_openat(cpu_env, arg1, p, @@ -8082,16 +8091,25 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, break; #if defined(TARGET_NR_name_to_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) case TARGET_NR_name_to_handle_at: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_name_to_handle_at(arg1, arg2, arg3, arg4, arg5); break; #endif #if defined(TARGET_NR_open_by_handle_at) && defined(CONFIG_OPEN_BY_HANDLE) case TARGET_NR_open_by_handle_at: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_open_by_handle_at(arg1, arg2, arg3); fd_trans_unregister(ret); break; #endif case TARGET_NR_close: + if (is_hostfd(arg1)) { + goto ebadf; + } fd_trans_unregister(arg1); ret = get_errno(close(arg1)); break; @@ -8155,7 +8173,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #if defined(TARGET_NR_linkat) case TARGET_NR_linkat: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { void * p2 = NULL; if (!arg2 || !arg4) goto efault; @@ -8180,6 +8200,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #if defined(TARGET_NR_unlinkat) case TARGET_NR_unlinkat: + if (is_hostfd(arg1)) { + goto ebadf; + } if (!(p = lock_user_string(arg2))) goto efault; ret = get_errno(unlinkat(arg1, p, arg3)); @@ -8311,6 +8334,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #if defined(TARGET_NR_mknodat) case TARGET_NR_mknodat: + if (is_hostfd(arg1)) { + goto ebadf; + } if (!(p = lock_user_string(arg2))) goto efault; ret = get_errno(mknodat(arg1, p, arg3, arg4)); @@ -8334,6 +8360,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, goto unimplemented; #endif case TARGET_NR_lseek: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = get_errno(lseek(arg1, arg2, arg3)); break; #if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA) @@ -8484,7 +8513,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #if defined(TARGET_NR_futimesat) case TARGET_NR_futimesat: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { struct timeval *tvp, tv[2]; if (arg3) { if (copy_from_user_timeval(&tv[0], arg3) @@ -8520,6 +8551,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #if defined(TARGET_NR_faccessat) && defined(__NR_faccessat) case TARGET_NR_faccessat: + if (is_hostfd(arg1)) { + goto ebadf; + } if (!(p = lock_user_string(arg2))) goto efault; ret = get_errno(faccessat(arg1, p, arg3, 0)); @@ -8564,7 +8598,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #if defined(TARGET_NR_renameat) case TARGET_NR_renameat: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { void *p2; p = lock_user_string(arg2); p2 = lock_user_string(arg4); @@ -8579,7 +8615,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #if defined(TARGET_NR_renameat2) case TARGET_NR_renameat2: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { void *p2; p = lock_user_string(arg2); p2 = lock_user_string(arg4); @@ -8603,6 +8641,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #if defined(TARGET_NR_mkdirat) case TARGET_NR_mkdirat: + if (is_hostfd(arg1)) { + goto ebadf; + } if (!(p = lock_user_string(arg2))) goto efault; ret = get_errno(mkdirat(arg1, p, arg3)); @@ -8618,6 +8659,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, break; #endif case TARGET_NR_dup: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = get_errno(dup(arg1)); if (ret >= 0) { fd_trans_dup(arg1, ret); @@ -8720,6 +8764,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR_dup2 case TARGET_NR_dup2: + if (is_hostfd(arg1) || is_hostfd(arg2)) { + goto ebadf; + } ret = get_errno(dup2(arg1, arg2)); if (ret >= 0) { fd_trans_dup(arg1, arg2); @@ -8731,6 +8778,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, { int host_flags; + if (is_hostfd(arg1) || is_hostfd(arg2)) { + goto ebadf; + } if ((arg3 & ~TARGET_O_CLOEXEC) != 0) { return -EINVAL; } @@ -9424,7 +9474,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #if defined(TARGET_NR_symlinkat) case TARGET_NR_symlinkat: - { + if (is_hostfd(arg2)) { + goto ebadf; + } else { void *p2; p = lock_user_string(arg1); p2 = lock_user_string(arg3); @@ -9475,7 +9527,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #if defined(TARGET_NR_readlinkat) case TARGET_NR_readlinkat: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { void *p2; p = lock_user_string(arg2); p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0); @@ -9619,13 +9673,22 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, unlock_user(p, arg1, 0); break; case TARGET_NR_ftruncate: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = get_errno(ftruncate(arg1, arg2)); break; case TARGET_NR_fchmod: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = get_errno(fchmod(arg1, arg2)); break; #if defined(TARGET_NR_fchmodat) case TARGET_NR_fchmodat: + if (is_hostfd(arg1)) { + goto ebadf; + } if (!(p = lock_user_string(arg2))) goto efault; ret = get_errno(fchmodat(arg1, p, arg3, 0)); @@ -9688,6 +9751,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, } break; case TARGET_NR_fstatfs: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = get_errno(fstatfs(arg1, &stfs)); goto convert_statfs; #ifdef TARGET_NR_statfs64 @@ -9718,6 +9784,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, } break; case TARGET_NR_fstatfs64: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = get_errno(fstatfs(arg1, &stfs)); goto convert_statfs64; #endif @@ -9732,84 +9801,135 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR_accept case TARGET_NR_accept: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_accept4(arg1, arg2, arg3, 0); break; #endif #ifdef TARGET_NR_accept4 case TARGET_NR_accept4: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_accept4(arg1, arg2, arg3, arg4); break; #endif #ifdef TARGET_NR_bind case TARGET_NR_bind: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_bind(arg1, arg2, arg3); break; #endif #ifdef TARGET_NR_connect case TARGET_NR_connect: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_connect(arg1, arg2, arg3); break; #endif #ifdef TARGET_NR_getpeername case TARGET_NR_getpeername: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_getpeername(arg1, arg2, arg3); break; #endif #ifdef TARGET_NR_getsockname case TARGET_NR_getsockname: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_getsockname(arg1, arg2, arg3); break; #endif #ifdef TARGET_NR_getsockopt case TARGET_NR_getsockopt: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_getsockopt(arg1, arg2, arg3, arg4, arg5); break; #endif #ifdef TARGET_NR_listen case TARGET_NR_listen: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = get_errno(listen(arg1, arg2)); break; #endif #ifdef TARGET_NR_recv case TARGET_NR_recv: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_recvfrom(arg1, arg2, arg3, arg4, 0, 0); break; #endif #ifdef TARGET_NR_recvfrom case TARGET_NR_recvfrom: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6); break; #endif #ifdef TARGET_NR_recvmsg case TARGET_NR_recvmsg: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_sendrecvmsg(arg1, arg2, arg3, 0); break; #endif #ifdef TARGET_NR_send case TARGET_NR_send: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_sendto(arg1, arg2, arg3, arg4, 0, 0); break; #endif #ifdef TARGET_NR_sendmsg case TARGET_NR_sendmsg: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_sendrecvmsg(arg1, arg2, arg3, 1); break; #endif #ifdef TARGET_NR_sendmmsg case TARGET_NR_sendmmsg: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1); break; case TARGET_NR_recvmmsg: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0); break; #endif #ifdef TARGET_NR_sendto case TARGET_NR_sendto: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_sendto(arg1, arg2, arg3, arg4, arg5, arg6); break; #endif #ifdef TARGET_NR_shutdown case TARGET_NR_shutdown: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = get_errno(shutdown(arg1, arg2)); break; #endif @@ -9835,6 +9955,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR_setsockopt case TARGET_NR_setsockopt: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5); break; #endif @@ -9938,7 +10061,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, goto do_stat; #endif case TARGET_NR_fstat: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { ret = get_errno(fstat(arg1, &st)); #if defined(TARGET_NR_stat) || defined(TARGET_NR_lstat) do_stat: @@ -10110,6 +10235,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, break; #endif case TARGET_NR_fsync: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = get_errno(fsync(arg1)); break; case TARGET_NR_clone: @@ -10225,6 +10353,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, ret = get_errno(getpgid(arg1)); break; case TARGET_NR_fchdir: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = get_errno(fchdir(arg1)); break; #ifdef TARGET_NR_bdflush /* not on x86_64 */ @@ -10244,7 +10375,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR__llseek /* Not on alpha */ case TARGET_NR__llseek: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { int64_t res; #if !defined(__NR_llseek) res = lseek(arg1, ((uint64_t)arg2 << 32) | (abi_ulong)arg3, arg5); @@ -10264,6 +10397,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR_getdents case TARGET_NR_getdents: + if (is_hostfd(arg1)) { + goto ebadf; + } #ifdef EMULATE_GETDENTS_WITH_GETDENTS #if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64 { @@ -10396,7 +10532,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif /* TARGET_NR_getdents */ #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) case TARGET_NR_getdents64: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { struct linux_dirent64 *dirp; abi_long count = arg3; if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) @@ -10454,10 +10592,19 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, goto efault; } + ret = 0; pfd = alloca(sizeof(struct pollfd) * nfds); for (i = 0; i < nfds; i++) { pfd[i].fd = tswap32(target_pfd[i].fd); pfd[i].events = tswap16(target_pfd[i].events); + if (is_hostfd(pfd[i].fd)) { + ret = -TARGET_EBADF; + } + } + if (ret < 0) { + unlock_user(target_pfd, arg1, + sizeof(struct target_pollfd) * nfds); + goto fail; } } @@ -10541,10 +10688,15 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, case TARGET_NR_flock: /* NOTE: the flock constant seems to be the same for every Linux platform */ + if (is_hostfd(arg1)) { + goto ebadf; + } ret = get_errno(safe_flock(arg1, arg2)); break; case TARGET_NR_readv: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); if (vec != NULL) { ret = get_errno(safe_readv(arg1, vec, arg3)); @@ -10555,7 +10707,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, } break; case TARGET_NR_writev: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); if (vec != NULL) { ret = get_errno(safe_writev(arg1, vec, arg3)); @@ -10567,7 +10721,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, break; #if defined(TARGET_NR_preadv) case TARGET_NR_preadv: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); if (vec != NULL) { unsigned long low, high; @@ -10583,7 +10739,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #if defined(TARGET_NR_pwritev) case TARGET_NR_pwritev: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); if (vec != NULL) { unsigned long low, high; @@ -10602,6 +10760,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, break; #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */ case TARGET_NR_fdatasync: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = get_errno(fdatasync(arg1)); break; #endif @@ -10866,6 +11027,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR_pread64 case TARGET_NR_pread64: + if (is_hostfd(arg1)) { + goto ebadf; + } if (regpairs_aligned(cpu_env, num)) { arg4 = arg5; arg5 = arg6; @@ -10876,6 +11040,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, unlock_user(p, arg2, ret); break; case TARGET_NR_pwrite64: + if (is_hostfd(arg1)) { + goto ebadf; + } if (regpairs_aligned(cpu_env, num)) { arg4 = arg5; arg5 = arg6; @@ -10971,6 +11138,10 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, { off_t *offp = NULL; off_t off; + + if (is_hostfd(arg1) || is_hostfd(arg2)) { + goto ebadf; + } if (arg3) { ret = get_user_sal(off, arg3); if (is_error(ret)) { @@ -10992,6 +11163,10 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, { off_t *offp = NULL; off_t off; + + if (is_hostfd(arg1) || is_hostfd(arg2)) { + goto ebadf; + } if (arg3) { ret = get_user_s64(off, arg3); if (is_error(ret)) { @@ -11059,6 +11234,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR_ftruncate64 case TARGET_NR_ftruncate64: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4); break; #endif @@ -11084,6 +11262,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR_fstat64 case TARGET_NR_fstat64: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = get_errno(fstat(arg1, &st)); if (!is_error(ret)) ret = host_to_target_stat64(cpu_env, arg2, &st); @@ -11096,6 +11277,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #ifdef TARGET_NR_newfstatat case TARGET_NR_newfstatat: #endif + if (is_hostfd(arg1)) { + goto ebadf; + } if (!(p = lock_user_string(arg2))) goto efault; ret = get_errno(fstatat(arg1, path(p), &st, arg4)); @@ -11184,6 +11368,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, break; #if defined(TARGET_NR_fchownat) case TARGET_NR_fchownat: + if (is_hostfd(arg1)) { + goto ebadf; + } if (!(p = lock_user_string(arg2))) goto efault; ret = get_errno(fchownat(arg1, p, low2highuid(arg3), @@ -11525,6 +11712,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #ifdef TARGET_NR_fchown32 case TARGET_NR_fchown32: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = get_errno(fchown(arg1, arg2, arg3)); break; #endif @@ -11626,6 +11816,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, * Note that offset and len are both 64-bit so appear as * pairs of 32-bit registers. */ + if (is_hostfd(arg1)) { + goto ebadf; + } ret = posix_fadvise(arg1, target_offset64(arg3, arg4), target_offset64(arg5, arg6), arg2); ret = -host_to_target_errno(ret); @@ -11636,6 +11829,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #ifdef TARGET_NR_fadvise64_64 case TARGET_NR_fadvise64_64: + if (is_hostfd(arg1)) { + goto ebadf; + } #if defined(TARGET_PPC) || defined(TARGET_XTENSA) /* 6 args: fd, advice, offset (high, low), len (high, low) */ ret = arg2; @@ -11664,6 +11860,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #ifdef TARGET_NR_fadvise64 case TARGET_NR_fadvise64: + if (is_hostfd(arg1)) { + goto ebadf; + } /* 5 args: fd, offset (high, low), len, advice */ if (regpairs_aligned(cpu_env, num)) { /* offset is in (3,4), len in 5 and advice in 6 */ @@ -11686,6 +11885,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #ifdef TARGET_NR_fadvise64 case TARGET_NR_fadvise64: #endif + if (is_hostfd(arg1)) { + goto ebadf; + } #ifdef TARGET_S390X switch (arg4) { case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */ @@ -11711,6 +11913,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #if TARGET_ABI_BITS == 32 case TARGET_NR_fcntl64: + if (is_hostfd(arg1)) { + goto ebadf; + } { int cmd; struct flock64 fl; @@ -11858,7 +12063,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, } break; case TARGET_NR_fsetxattr: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { void *n, *v = 0; if (arg3) { v = lock_user(VERIFY_READ, arg3, arg4, 1); @@ -11905,7 +12112,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, } break; case TARGET_NR_fgetxattr: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { void *n, *v = 0; if (arg3) { v = lock_user(VERIFY_WRITE, arg3, arg4, 0); @@ -11944,7 +12153,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, } break; case TARGET_NR_fremovexattr: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { void *n; n = lock_user_string(arg2); if (n) { @@ -12095,7 +12306,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #if defined(TARGET_NR_utimensat) case TARGET_NR_utimensat: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { struct timespec *tsp, ts[2]; if (!arg3) { tsp = NULL; @@ -12141,6 +12354,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch) case TARGET_NR_inotify_add_watch: + if (is_hostfd(arg1)) { + goto ebadf; + } p = lock_user_string(arg2); ret = get_errno(sys_inotify_add_watch(arg1, path(p), arg3)); unlock_user(p, arg2, 0); @@ -12148,6 +12364,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch) case TARGET_NR_inotify_rm_watch: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = get_errno(sys_inotify_rm_watch(arg1, arg2)); break; #endif @@ -12248,14 +12467,18 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #ifdef CONFIG_SPLICE #ifdef TARGET_NR_tee case TARGET_NR_tee: - { + if (is_hostfd(arg1) || is_hostfd(arg2)) { + goto ebadf; + } else { ret = get_errno(tee(arg1,arg2,arg3,arg4)); } break; #endif #ifdef TARGET_NR_splice case TARGET_NR_splice: - { + if (is_hostfd(arg1) || is_hostfd(arg3)) { + goto ebadf; + } else { loff_t loff_in, loff_out; loff_t *ploff_in = NULL, *ploff_out = NULL; if (arg2) { @@ -12285,8 +12508,10 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, break; #endif #ifdef TARGET_NR_vmsplice - case TARGET_NR_vmsplice: - { + case TARGET_NR_vmsplice: + if (is_hostfd(arg1)) { + goto ebadf; + } else { struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); if (vec != NULL) { ret = get_errno(vmsplice(arg1, vec, arg3, arg4)); @@ -12327,6 +12552,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif /* CONFIG_EVENTFD */ #if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate) case TARGET_NR_fallocate: + if (is_hostfd(arg1)) { + goto ebadf; + } #if TARGET_ABI_BITS == 32 ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4), target_offset64(arg5, arg6))); @@ -12338,6 +12566,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #if defined(CONFIG_SYNC_FILE_RANGE) #if defined(TARGET_NR_sync_file_range) case TARGET_NR_sync_file_range: + if (is_hostfd(arg1)) { + goto ebadf; + } #if TARGET_ABI_BITS == 32 #if defined(TARGET_MIPS) ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), @@ -12354,6 +12585,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #if defined(TARGET_NR_sync_file_range2) case TARGET_NR_sync_file_range2: /* This is like sync_file_range but the arguments are reordered */ + if (is_hostfd(arg1)) { + goto ebadf; + } #if TARGET_ABI_BITS == 32 ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), target_offset64(arg5, arg6), arg2)); @@ -12365,11 +12599,17 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #endif #if defined(TARGET_NR_signalfd4) case TARGET_NR_signalfd4: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_signalfd4(arg1, arg2, arg4); break; #endif #if defined(TARGET_NR_signalfd) case TARGET_NR_signalfd: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = do_signalfd4(arg1, arg2, 0); break; #endif @@ -12389,6 +12629,10 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, { struct epoll_event ep; struct epoll_event *epp = 0; + + if (is_hostfd(arg1) || is_hostfd(arg3)) { + goto ebadf; + } if (arg4) { struct target_epoll_event *target_ep; if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) { @@ -12422,6 +12666,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, int maxevents = arg3; int timeout = arg4; + if (is_hostfd(arg1)) { + goto ebadf; + } if (maxevents <= 0 || maxevents > TARGET_EP_MAX_EVENTS) { ret = -TARGET_EINVAL; break; @@ -12698,7 +12945,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD) case TARGET_NR_timerfd_gettime: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { struct itimerspec its_curr; ret = get_errno(timerfd_gettime(arg1, &its_curr)); @@ -12712,7 +12961,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD) case TARGET_NR_timerfd_settime: - { + if (is_hostfd(arg1)) { + goto ebadf; + } else { struct itimerspec its_new, its_old, *p_new; if (arg3) { @@ -12747,6 +12998,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, #if defined(TARGET_NR_setns) && defined(CONFIG_SETNS) case TARGET_NR_setns: + if (is_hostfd(arg1)) { + goto ebadf; + } ret = get_errno(setns(arg1, arg2)); break; #endif @@ -12781,4 +13035,7 @@ fail: efault: ret = -TARGET_EFAULT; goto fail; +ebadf: + ret = -TARGET_EBADF; + goto fail; }