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1.1 root 1: /*
2: * Copyright (c) 1982, 1986 Regents of the University of California.
3: * All rights reserved. The Berkeley software License Agreement
4: * specifies the terms and conditions for redistribution.
5: *
6: * @(#)user.h 7.1 (Berkeley) 6/4/86
7: */
8:
9: #ifdef KERNEL
10: #include "../machine/pcb.h"
11: #include "dmap.h"
12: #include "time.h"
13: #include "resource.h"
14: #include "namei.h"
15: #else
16: #include <machine/pcb.h>
17: #include <sys/dmap.h>
18: #include <sys/time.h>
19: #include <sys/resource.h>
20: #include <sys/namei.h>
21: #endif
22:
23: /*
24: * Per process structure containing data that
25: * isn't needed in core when the process is swapped out.
26: */
27:
28: #define MAXCOMLEN 16 /* <= MAXNAMLEN, >= sizeof(ac_comm) */
29:
30: struct user {
31: struct pcb u_pcb;
32: struct proc *u_procp; /* pointer to proc structure */
33: int *u_ar0; /* address of users saved R0 */
34: char u_comm[MAXCOMLEN + 1];
35:
36: /* syscall parameters, results and catches */
37: int u_arg[8]; /* arguments to current system call */
38: int *u_ap; /* pointer to arglist */
39: label_t u_qsave; /* for non-local gotos on interrupts */
40: union { /* syscall return values */
41: struct {
42: int R_val1;
43: int R_val2;
44: } u_rv;
45: #define r_val1 u_rv.R_val1
46: #define r_val2 u_rv.R_val2
47: off_t r_off;
48: time_t r_time;
49: } u_r;
50: char u_error; /* return error code */
51: char u_eosys; /* special action on end of syscall */
52:
53: /* 1.1 - processes and protection */
54: uid_t u_uid; /* effective user id */
55: uid_t u_ruid; /* real user id */
56: gid_t u_gid; /* effective group id */
57: gid_t u_rgid; /* real group id */
58: gid_t u_groups[NGROUPS]; /* groups, 0 terminated */
59:
60: /* 1.2 - memory management */
61: size_t u_tsize; /* text size (clicks) */
62: size_t u_dsize; /* data size (clicks) */
63: size_t u_ssize; /* stack size (clicks) */
64: struct dmap u_dmap; /* disk map for data segment */
65: struct dmap u_smap; /* disk map for stack segment */
66: struct dmap u_cdmap, u_csmap; /* shadows of u_dmap, u_smap, for
67: use of parent during fork */
68: label_t u_ssave; /* label variable for swapping */
69: size_t u_odsize, u_ossize; /* for (clumsy) expansion swaps */
70: time_t u_outime; /* user time at last sample */
71:
72: /* 1.3 - signal management */
73: int (*u_signal[NSIG])(); /* disposition of signals */
74: int u_sigmask[NSIG]; /* signals to be blocked */
75: int u_sigonstack; /* signals to take on sigstack */
76: int u_sigintr; /* signals that interrupt syscalls */
77: int u_oldmask; /* saved mask from before sigpause */
78: int u_code; /* ``code'' to trap */
79: struct sigstack u_sigstack; /* sp & on stack state variable */
80: #define u_onstack u_sigstack.ss_onstack
81: #define u_sigsp u_sigstack.ss_sp
82:
83: /* 1.4 - descriptor management */
84: struct file *u_ofile[NOFILE]; /* file structures for open files */
85: char u_pofile[NOFILE]; /* per-process flags of open files */
86: int u_lastfile; /* high-water mark of u_ofile */
87: #define UF_EXCLOSE 0x1 /* auto-close on exec */
88: #define UF_MAPPED 0x2 /* mapped from device */
89: struct inode *u_cdir; /* current directory */
90: struct inode *u_rdir; /* root directory of current process */
91: struct tty *u_ttyp; /* controlling tty pointer */
92: dev_t u_ttyd; /* controlling tty dev */
93: short u_cmask; /* mask for file creation */
94:
95: /* 1.5 - timing and statistics */
96: struct rusage u_ru; /* stats for this proc */
97: struct rusage u_cru; /* sum of stats for reaped children */
98: struct itimerval u_timer[3];
99: int u_XXX[3];
100: struct timeval u_start;
101: short u_acflag;
102:
103: struct uprof { /* profile arguments */
104: short *pr_base; /* buffer base */
105: unsigned pr_size; /* buffer size */
106: unsigned pr_off; /* pc offset */
107: unsigned pr_scale; /* pc scaling */
108: } u_prof;
109:
110: /* 1.6 - resource controls */
111: struct rlimit u_rlimit[RLIM_NLIMITS];
112: struct quota *u_quota; /* user's quota structure */
113: int u_qflags; /* per process quota flags */
114:
115: /* namei & co. */
116: struct nameicache { /* last successful directory search */
117: int nc_prevoffset; /* offset at which last entry found */
118: ino_t nc_inumber; /* inum of cached directory */
119: dev_t nc_dev; /* dev of cached directory */
120: time_t nc_time; /* time stamp for cache entry */
121: } u_ncache;
122: struct nameidata u_nd;
123:
124: int u_stack[1];
125: };
126:
127: /* u_eosys values */
128: #define JUSTRETURN 1
129: #define RESTARTSYS 2
130: #define NORMALRETURN 3
131:
132: /* u_error codes */
133: #ifdef KERNEL
134: #include "errno.h"
135: #else
136: #include <errno.h>
137: #endif
138:
139: #ifdef KERNEL
140: extern struct user u;
141: extern struct user swaputl;
142: extern struct user forkutl;
143: extern struct user xswaputl;
144: extern struct user xswap2utl;
145: extern struct user pushutl;
146: extern struct user vfutl;
147: #endif
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