1 /* 2 * See i386-fbsd.c for copyright and license terms. 3 * 4 * System call arguments come in several flavours: 5 * Hex -- values that should be printed in hex (addresses) 6 * Octal -- Same as above, but octal 7 * Int -- normal integer values (file descriptors, for example) 8 * String -- pointers to sensible data. Note that we treat read() and 9 * write() arguments as such, even though they may *not* be 10 * printable data. 11 * Ptr -- pointer to some specific structure. Just print as hex for now. 12 * Stat -- a pointer to a stat buffer. Currently unused. 13 * Ioctl -- an ioctl command. Woefully limited. 14 * Quad -- a double-word value. e.g., lseek(int, offset_t, int) 15 * Signal -- a signal number. Prints the signal name (SIGxxx) 16 * Sockaddr -- a pointer to a struct sockaddr. Prints symbolic AF, and IP:Port 17 * StringArray -- a pointer to an array of string pointers. 18 * Timespec -- a pointer to a struct timespec. Prints both elements. 19 * Timeval -- a pointer to a struct timeval. Prints both elements. 20 * Itimerval -- a pointer to a struct itimerval. Prints all elements. 21 * Pollfd -- a pointer to an array of struct pollfd. Prints .fd and .events. 22 * Fd_set -- a pointer to an array of fd_set. Prints the fds that are set. 23 * Sigaction -- a pointer to a struct sigaction. Prints all elements. 24 * 25 * In addition, the pointer types (String, Ptr) may have OUT masked in -- 26 * this means that the data is set on *return* from the system call -- or 27 * IN (meaning that the data is passed *into* the system call). 28 */ 29 /* 30 * $FreeBSD$ 31 */ 32 33 enum Argtype { None = 1, Hex, Octal, Int, Name, String, Ptr, Stat, Ioctl, Quad, 34 Signal, Sockaddr, StringArray, Timespec, Timeval, Itimerval, Pollfd, 35 Fd_set, Sigaction, Fcntl, Mprot, Mmapflags, Whence, Readlinkres }; 36 37 #define ARG_MASK 0xff 38 #define OUT 0x100 39 #define IN /*0x20*/0 40 41 struct syscall_args { 42 enum Argtype type; 43 int offset; 44 }; 45 46 struct syscall { 47 const char *name; 48 int ret_type; /* 0, 1, or 2 return values */ 49 int nargs; /* actual number of meaningful arguments */ 50 /* Hopefully, no syscalls with > 10 args */ 51 struct syscall_args args[10]; 52 }; 53 54 struct syscall *get_syscall(const char*); 55 char *get_string(int, void*, int); 56 char *print_arg(int, struct syscall_args *, unsigned long*, long, struct trussinfo *); 57 void print_syscall(struct trussinfo *, const char *, int, char **); 58 void print_syscall_ret(struct trussinfo *, const char *, int, char **, int, 59 long); 60