diff options
| -rw-r--r-- | bsd-user/bsd-file.h | 359 | ||||
| -rw-r--r-- | bsd-user/freebsd/os-syscall.c | 116 | ||||
| -rw-r--r-- | bsd-user/syscall_defs.h | 4 |
3 files changed, 479 insertions, 0 deletions
diff --git a/bsd-user/bsd-file.h b/bsd-user/bsd-file.h index e9e2c85eb6..b2dca58612 100644 --- a/bsd-user/bsd-file.h +++ b/bsd-user/bsd-file.h @@ -22,11 +22,43 @@ #include "qemu/path.h" +#define LOCK_PATH(p, arg) \ +do { \ + (p) = lock_user_string(arg); \ + if ((p) == NULL) { \ + return -TARGET_EFAULT; \ + } \ +} while (0) + +#define UNLOCK_PATH(p, arg) unlock_user(p, arg, 0) + +#define LOCK_PATH2(p1, arg1, p2, arg2) \ +do { \ + (p1) = lock_user_string(arg1); \ + if ((p1) == NULL) { \ + return -TARGET_EFAULT; \ + } \ + (p2) = lock_user_string(arg2); \ + if ((p2) == NULL) { \ + unlock_user(p1, arg1, 0); \ + return -TARGET_EFAULT; \ + } \ +} while (0) + +#define UNLOCK_PATH2(p1, arg1, p2, arg2) \ +do { \ + unlock_user(p2, arg2, 0); \ + unlock_user(p1, arg1, 0); \ +} while (0) + extern struct iovec *lock_iovec(int type, abi_ulong target_addr, int count, int copy); extern void unlock_iovec(struct iovec *vec, abi_ulong target_addr, int count, int copy); +int safe_open(const char *path, int flags, mode_t mode); +int safe_openat(int fd, const char *path, int flags, mode_t mode); + ssize_t safe_read(int fd, void *buf, size_t nbytes); ssize_t safe_pread(int fd, void *buf, size_t nbytes, off_t offset); ssize_t safe_readv(int fd, const struct iovec *iov, int iovcnt); @@ -190,4 +222,331 @@ static abi_long do_bsd_pwritev(void *cpu_env, abi_long arg1, return ret; } +/* open(2) */ +static abi_long do_bsd_open(abi_long arg1, abi_long arg2, abi_long arg3) +{ + abi_long ret; + void *p; + + LOCK_PATH(p, arg1); + ret = get_errno(safe_open(path(p), target_to_host_bitmask(arg2, + fcntl_flags_tbl), arg3)); + UNLOCK_PATH(p, arg1); + + return ret; +} + +/* openat(2) */ +static abi_long do_bsd_openat(abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4) +{ + abi_long ret; + void *p; + + LOCK_PATH(p, arg2); + ret = get_errno(safe_openat(arg1, path(p), + target_to_host_bitmask(arg3, fcntl_flags_tbl), arg4)); + UNLOCK_PATH(p, arg2); + + return ret; +} + +/* close(2) */ +static inline abi_long do_bsd_close(abi_long arg1) +{ + return get_errno(close(arg1)); +} + +/* fdatasync(2) */ +static abi_long do_bsd_fdatasync(abi_long arg1) +{ + return get_errno(fdatasync(arg1)); +} + +/* fsync(2) */ +static abi_long do_bsd_fsync(abi_long arg1) +{ + return get_errno(fsync(arg1)); +} + +/* closefrom(2) */ +static abi_long do_bsd_closefrom(abi_long arg1) +{ + closefrom(arg1); /* returns void */ + return get_errno(0); +} + +/* revoke(2) */ +static abi_long do_bsd_revoke(abi_long arg1) +{ + abi_long ret; + void *p; + + LOCK_PATH(p, arg1); + ret = get_errno(revoke(p)); /* XXX path(p)? */ + UNLOCK_PATH(p, arg1); + + return ret; +} + +/* access(2) */ +static abi_long do_bsd_access(abi_long arg1, abi_long arg2) +{ + abi_long ret; + void *p; + + LOCK_PATH(p, arg1); + ret = get_errno(access(path(p), arg2)); + UNLOCK_PATH(p, arg1); + + return ret; +} + +/* eaccess(2) */ +static abi_long do_bsd_eaccess(abi_long arg1, abi_long arg2) +{ + abi_long ret; + void *p; + + LOCK_PATH(p, arg1); + ret = get_errno(eaccess(path(p), arg2)); + UNLOCK_PATH(p, arg1); + + return ret; +} + +/* faccessat(2) */ +static abi_long do_bsd_faccessat(abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4) +{ + abi_long ret; + void *p; + + LOCK_PATH(p, arg2); + ret = get_errno(faccessat(arg1, p, arg3, arg4)); /* XXX path(p)? */ + UNLOCK_PATH(p, arg2); + + return ret; +} + +/* chdir(2) */ +static abi_long do_bsd_chdir(abi_long arg1) +{ + abi_long ret; + void *p; + + LOCK_PATH(p, arg1); + ret = get_errno(chdir(p)); /* XXX path(p)? */ + UNLOCK_PATH(p, arg1); + + return ret; +} + +/* fchdir(2) */ +static abi_long do_bsd_fchdir(abi_long arg1) +{ + return get_errno(fchdir(arg1)); +} + +/* rename(2) */ +static abi_long do_bsd_rename(abi_long arg1, abi_long arg2) +{ + abi_long ret; + void *p1, *p2; + + LOCK_PATH2(p1, arg1, p2, arg2); + ret = get_errno(rename(p1, p2)); /* XXX path(p1), path(p2) */ + UNLOCK_PATH2(p1, arg1, p2, arg2); + + return ret; +} + +/* renameat(2) */ +static abi_long do_bsd_renameat(abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4) +{ + abi_long ret; + void *p1, *p2; + + LOCK_PATH2(p1, arg2, p2, arg4); + ret = get_errno(renameat(arg1, p1, arg3, p2)); + UNLOCK_PATH2(p1, arg2, p2, arg4); + + return ret; +} + +/* link(2) */ +static abi_long do_bsd_link(abi_long arg1, abi_long arg2) +{ + abi_long ret; + void *p1, *p2; + + LOCK_PATH2(p1, arg1, p2, arg2); + ret = get_errno(link(p1, p2)); /* XXX path(p1), path(p2) */ + UNLOCK_PATH2(p1, arg1, p2, arg2); + + return ret; +} + +/* linkat(2) */ +static abi_long do_bsd_linkat(abi_long arg1, abi_long arg2, + abi_long arg3, abi_long arg4, abi_long arg5) +{ + abi_long ret; + void *p1, *p2; + + LOCK_PATH2(p1, arg2, p2, arg4); + ret = get_errno(linkat(arg1, p1, arg3, p2, arg5)); + UNLOCK_PATH2(p1, arg2, p2, arg4); + + return ret; +} + +/* unlink(2) */ +static abi_long do_bsd_unlink(abi_long arg1) +{ + abi_long ret; + void *p; + + LOCK_PATH(p, arg1); + ret = get_errno(unlink(p)); /* XXX path(p) */ + UNLOCK_PATH(p, arg1); + + return ret; +} + +/* unlinkat(2) */ +static abi_long do_bsd_unlinkat(abi_long arg1, abi_long arg2, + abi_long arg3) +{ + abi_long ret; + void *p; + + LOCK_PATH(p, arg2); + ret = get_errno(unlinkat(arg1, p, arg3)); /* XXX path(p) */ + UNLOCK_PATH(p, arg2); + + return ret; +} + +/* mkdir(2) */ +static abi_long do_bsd_mkdir(abi_long arg1, abi_long arg2) +{ + abi_long ret; + void *p; + + LOCK_PATH(p, arg1); + ret = get_errno(mkdir(p, arg2)); /* XXX path(p) */ + UNLOCK_PATH(p, arg1); + + return ret; +} + +/* mkdirat(2) */ +static abi_long do_bsd_mkdirat(abi_long arg1, abi_long arg2, + abi_long arg3) +{ + abi_long ret; + void *p; + + LOCK_PATH(p, arg2); + ret = get_errno(mkdirat(arg1, p, arg3)); + UNLOCK_PATH(p, arg2); + + return ret; +} + +/* rmdir(2) */ +static abi_long do_bsd_rmdir(abi_long arg1) +{ + abi_long ret; + void *p; + + LOCK_PATH(p, arg1); + ret = get_errno(rmdir(p)); /* XXX path(p)? */ + UNLOCK_PATH(p, arg1); + + return ret; +} + +/* undocumented __getcwd(char *buf, size_t len) system call */ +static abi_long do_bsd___getcwd(abi_long arg1, abi_long arg2) +{ + abi_long ret; + void *p; + + p = lock_user(VERIFY_WRITE, arg1, arg2, 0); + if (p == NULL) { + return -TARGET_EFAULT; + } + ret = safe_syscall(SYS___getcwd, p, arg2); + unlock_user(p, arg1, ret == 0 ? strlen(p) + 1 : 0); + + return get_errno(ret); +} + +/* dup(2) */ +static abi_long do_bsd_dup(abi_long arg1) +{ + return get_errno(dup(arg1)); +} + +/* dup2(2) */ +static abi_long do_bsd_dup2(abi_long arg1, abi_long arg2) +{ + return get_errno(dup2(arg1, arg2)); +} + +/* truncate(2) */ +static abi_long do_bsd_truncate(void *cpu_env, abi_long arg1, + abi_long arg2, abi_long arg3, abi_long arg4) +{ + abi_long ret; + void *p; + + LOCK_PATH(p, arg1); + if (regpairs_aligned(cpu_env) != 0) { + arg2 = arg3; + arg3 = arg4; + } + ret = get_errno(truncate(p, target_arg64(arg2, arg3))); + UNLOCK_PATH(p, arg1); + + return ret; +} + +/* ftruncate(2) */ +static abi_long do_bsd_ftruncate(void *cpu_env, abi_long arg1, + abi_long arg2, abi_long arg3, abi_long arg4) +{ + if (regpairs_aligned(cpu_env) != 0) { + arg2 = arg3; + arg3 = arg4; + } + return get_errno(ftruncate(arg1, target_arg64(arg2, arg3))); +} + +/* acct(2) */ +static abi_long do_bsd_acct(abi_long arg1) +{ + abi_long ret; + void *p; + + if (arg1 == 0) { + ret = get_errno(acct(NULL)); + } else { + LOCK_PATH(p, arg1); + ret = get_errno(acct(path(p))); + UNLOCK_PATH(p, arg1); + } + return ret; +} + +/* sync(2) */ +static abi_long do_bsd_sync(void) +{ + sync(); + return 0; +} + #endif /* BSD_FILE_H */ diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c index 71aa0d38e0..2623caf800 100644 --- a/bsd-user/freebsd/os-syscall.c +++ b/bsd-user/freebsd/os-syscall.c @@ -44,6 +44,10 @@ #include "bsd-proc.h" /* I/O */ +safe_syscall3(int, open, const char *, path, int, flags, mode_t, mode); +safe_syscall4(int, openat, int, fd, const char *, path, int, flags, mode_t, + mode); + safe_syscall3(ssize_t, read, int, fd, void *, buf, size_t, nbytes); safe_syscall4(ssize_t, pread, int, fd, void *, buf, size_t, nbytes, off_t, offset); @@ -257,6 +261,118 @@ static abi_long freebsd_syscall(void *cpu_env, int num, abi_long arg1, ret = do_bsd_pwritev(cpu_env, arg1, arg2, arg3, arg4, arg5, arg6); break; + case TARGET_FREEBSD_NR_open: /* open(2) */ + ret = do_bsd_open(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_openat: /* openat(2) */ + ret = do_bsd_openat(arg1, arg2, arg3, arg4); + break; + + case TARGET_FREEBSD_NR_close: /* close(2) */ + ret = do_bsd_close(arg1); + break; + + case TARGET_FREEBSD_NR_fdatasync: /* fdatasync(2) */ + ret = do_bsd_fdatasync(arg1); + break; + + case TARGET_FREEBSD_NR_fsync: /* fsync(2) */ + ret = do_bsd_fsync(arg1); + break; + + case TARGET_FREEBSD_NR_freebsd12_closefrom: /* closefrom(2) */ + ret = do_bsd_closefrom(arg1); + break; + + case TARGET_FREEBSD_NR_revoke: /* revoke(2) */ + ret = do_bsd_revoke(arg1); + break; + + case TARGET_FREEBSD_NR_access: /* access(2) */ + ret = do_bsd_access(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_eaccess: /* eaccess(2) */ + ret = do_bsd_eaccess(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_faccessat: /* faccessat(2) */ + ret = do_bsd_faccessat(arg1, arg2, arg3, arg4); + break; + + case TARGET_FREEBSD_NR_chdir: /* chdir(2) */ + ret = do_bsd_chdir(arg1); + break; + + case TARGET_FREEBSD_NR_fchdir: /* fchdir(2) */ + ret = do_bsd_fchdir(arg1); + break; + + case TARGET_FREEBSD_NR_rename: /* rename(2) */ + ret = do_bsd_rename(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_renameat: /* renameat(2) */ + ret = do_bsd_renameat(arg1, arg2, arg3, arg4); + break; + + case TARGET_FREEBSD_NR_link: /* link(2) */ + ret = do_bsd_link(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_linkat: /* linkat(2) */ + ret = do_bsd_linkat(arg1, arg2, arg3, arg4, arg5); + break; + + case TARGET_FREEBSD_NR_unlink: /* unlink(2) */ + ret = do_bsd_unlink(arg1); + break; + + case TARGET_FREEBSD_NR_unlinkat: /* unlinkat(2) */ + ret = do_bsd_unlinkat(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_mkdir: /* mkdir(2) */ + ret = do_bsd_mkdir(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_mkdirat: /* mkdirat(2) */ + ret = do_bsd_mkdirat(arg1, arg2, arg3); + break; + + case TARGET_FREEBSD_NR_rmdir: /* rmdir(2) (XXX no rmdirat()?) */ + ret = do_bsd_rmdir(arg1); + break; + + case TARGET_FREEBSD_NR___getcwd: /* undocumented __getcwd() */ + ret = do_bsd___getcwd(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_dup: /* dup(2) */ + ret = do_bsd_dup(arg1); + break; + + case TARGET_FREEBSD_NR_dup2: /* dup2(2) */ + ret = do_bsd_dup2(arg1, arg2); + break; + + case TARGET_FREEBSD_NR_truncate: /* truncate(2) */ + ret = do_bsd_truncate(cpu_env, arg1, arg2, arg3, arg4); + break; + + case TARGET_FREEBSD_NR_ftruncate: /* ftruncate(2) */ + ret = do_bsd_ftruncate(cpu_env, arg1, arg2, arg3, arg4); + break; + + case TARGET_FREEBSD_NR_acct: /* acct(2) */ + ret = do_bsd_acct(arg1); + break; + + case TARGET_FREEBSD_NR_sync: /* sync(2) */ + ret = do_bsd_sync(); + break; + default: qemu_log_mask(LOG_UNIMP, "Unsupported syscall: %d\n", num); ret = -TARGET_ENOSYS; diff --git a/bsd-user/syscall_defs.h b/bsd-user/syscall_defs.h index f5797b28e3..b6d113d24a 100644 --- a/bsd-user/syscall_defs.h +++ b/bsd-user/syscall_defs.h @@ -226,4 +226,8 @@ type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \ return safe_syscall(SYS_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ } +/* So far all target and host bitmasks are the same */ +#define target_to_host_bitmask(x, tbl) (x) +#define host_to_target_bitmask(x, tbl) (x) + #endif /* SYSCALL_DEFS_H */ |