diff options
Diffstat (limited to 'bsd-user/bsd-file.h')
| -rw-r--r-- | bsd-user/bsd-file.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/bsd-user/bsd-file.h b/bsd-user/bsd-file.h index e9e2c85eb6..2bd312f8e1 100644 --- a/bsd-user/bsd-file.h +++ b/bsd-user/bsd-file.h @@ -22,11 +22,25 @@ #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) + + 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 +204,39 @@ 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)); +} + #endif /* BSD_FILE_H */ |