projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| f09a3c06 KT |
1 | /* |
| 2 | * The user structure. | |
| 3 | * One allocated per process. | |
| 4 | * Contains all per process data | |
| 5 | * that doesn't need to be referenced | |
| 6 | * while the process is swapped. | |
| 7 | * The user block is USIZE*64 bytes | |
| 8 | * long; resides at virtual kernel | |
| 9 | * loc 140000; contains the system | |
| 10 | * stack per user; is cross referenced | |
| 11 | * with the proc structure for the | |
| 12 | * same process. | |
| 13 | */ | |
| 14 | ||
| 15 | #define EXCLOSE 01 | |
| 16 | ||
| 17 | struct user | |
| 18 | { | |
| 19 | label_t u_rsav; /* save info when exchanging stacks */ | |
| 20 | int u_fper; /* FP error register */ | |
| 21 | int u_fpsaved; /* FP regs saved for this proc */ | |
| 22 | struct { | |
| 23 | int u_fpsr; /* FP status register */ | |
| 24 | double u_fpregs[6]; /* FP registers */ | |
| 25 | } u_fps; | |
| 26 | char u_segflg; /* IO flag: 0:user D; 1:system; 2:user I */ | |
| 27 | char u_error; /* return error code */ | |
| 28 | short u_uid; /* effective user id */ | |
| 29 | short u_gid; /* effective group id */ | |
| 30 | short u_ruid; /* real user id */ | |
| 31 | short u_rgid; /* real group id */ | |
| 32 | struct proc *u_procp; /* pointer to proc structure */ | |
| 33 | int *u_ap; /* pointer to arglist */ | |
| 34 | union { /* syscall return values */ | |
| 35 | struct { | |
| 36 | int r_val1; | |
| 37 | int r_val2; | |
| 38 | }; | |
| 39 | off_t r_off; | |
| 40 | time_t r_time; | |
| 41 | } u_r; | |
| 42 | caddr_t u_base; /* base address for IO */ | |
| 43 | unsigned int u_count; /* bytes remaining for IO */ | |
| 44 | off_t u_offset; /* offset in file for IO */ | |
| 45 | struct inode *u_cdir; /* pointer to inode of current directory */ | |
| 46 | struct inode *u_rdir; /* root directory of current process */ | |
| 47 | char u_dbuf[DIRSIZ]; /* current pathname component */ | |
| 48 | caddr_t u_dirp; /* pathname pointer */ | |
| 49 | struct direct u_dent; /* current directory entry */ | |
| 50 | struct inode *u_pdir; /* inode of parent directory of dirp */ | |
| 51 | int u_uisa[16]; /* prototype of segmentation addresses */ | |
| 52 | int u_uisd[16]; /* prototype of segmentation descriptors */ | |
| 53 | struct file *u_ofile[NOFILE]; /* pointers to file structures of open files */ | |
| 54 | char u_pofile[NOFILE]; /* per-process flags of open files */ | |
| 55 | int u_arg[5]; /* arguments to current system call */ | |
| 56 | unsigned u_tsize; /* text size (clicks) */ | |
| 57 | unsigned u_dsize; /* data size (clicks) */ | |
| 58 | unsigned u_ssize; /* stack size (clicks) */ | |
| 59 | label_t u_qsav; /* label variable for quits and interrupts */ | |
| 60 | label_t u_ssav; /* label variable for swapping */ | |
| 61 | int u_signal[NSIG]; /* disposition of signals */ | |
| 62 | time_t u_utime; /* this process user time */ | |
| 63 | time_t u_stime; /* this process system time */ | |
| 64 | time_t u_cutime; /* sum of childs' utimes */ | |
| 65 | time_t u_cstime; /* sum of childs' stimes */ | |
| 66 | int *u_ar0; /* address of users saved R0 */ | |
| 67 | struct { /* profile arguments */ | |
| 68 | short *pr_base; /* buffer base */ | |
| 69 | unsigned pr_size; /* buffer size */ | |
| 70 | unsigned pr_off; /* pc offset */ | |
| 71 | unsigned pr_scale; /* pc scaling */ | |
| 72 | } u_prof; | |
| 73 | char u_intflg; /* catch intr from sys */ | |
| 74 | char u_sep; /* flag for I and D separation */ | |
| 75 | struct tty *u_ttyp; /* controlling tty pointer */ | |
| 76 | dev_t u_ttyd; /* controlling tty dev */ | |
| 77 | struct { /* header of executable file */ | |
| 78 | int ux_mag; /* magic number */ | |
| 79 | unsigned ux_tsize; /* text size */ | |
| 80 | unsigned ux_dsize; /* data size */ | |
| 81 | unsigned ux_bsize; /* bss size */ | |
| 82 | unsigned ux_ssize; /* symbol table size */ | |
| 83 | unsigned ux_entloc; /* entry location */ | |
| 84 | unsigned ux_unused; | |
| 85 | unsigned ux_relflg; | |
| 86 | } u_exdata; | |
| 87 | char u_comm[DIRSIZ]; | |
| 88 | time_t u_start; | |
| 89 | char u_acflag; | |
| 90 | short u_fpflag; /* unused now, will be later */ | |
| 91 | short u_cmask; /* mask for file creation */ | |
| 92 | int u_stack[1]; | |
| 93 | /* kernel stack per user | |
| 94 | * extends from u + USIZE*64 | |
| 95 | * backward not to reach here | |
| 96 | */ | |
| 97 | }; | |
| 98 | ||
| 99 | extern struct user u; | |
| 100 | ||
| 101 | /* u_error codes */ | |
| 102 | #define EPERM 1 | |
| 103 | #define ENOENT 2 | |
| 104 | #define ESRCH 3 | |
| 105 | #define EINTR 4 | |
| 106 | #define EIO 5 | |
| 107 | #define ENXIO 6 | |
| 108 | #define E2BIG 7 | |
| 109 | #define ENOEXEC 8 | |
| 110 | #define EBADF 9 | |
| 111 | #define ECHILD 10 | |
| 112 | #define EAGAIN 11 | |
| 113 | #define ENOMEM 12 | |
| 114 | #define EACCES 13 | |
| 115 | #define EFAULT 14 | |
| 116 | #define ENOTBLK 15 | |
| 117 | #define EBUSY 16 | |
| 118 | #define EEXIST 17 | |
| 119 | #define EXDEV 18 | |
| 120 | #define ENODEV 19 | |
| 121 | #define ENOTDIR 20 | |
| 122 | #define EISDIR 21 | |
| 123 | #define EINVAL 22 | |
| 124 | #define ENFILE 23 | |
| 125 | #define EMFILE 24 | |
| 126 | #define ENOTTY 25 | |
| 127 | #define ETXTBSY 26 | |
| 128 | #define EFBIG 27 | |
| 129 | #define ENOSPC 28 | |
| 130 | #define ESPIPE 29 | |
| 131 | #define EROFS 30 | |
| 132 | #define EMLINK 31 | |
| 133 | #define EPIPE 32 | |
| 134 | #define EDOM 33 | |
| 135 | #define ERANGE 34 |