1 /* user.h 4.24 82/12/17 */ 2 3 #ifdef KERNEL 4 #include "../machine/pcb.h" 5 #include "../h/dmap.h" 6 #else 7 #include <machine/pcb.h> 8 #include <sys/dmap.h> 9 #endif 10 #include <time.h> 11 #include <resource.h> 12 /* 13 * Per process structure containing data that 14 * isn't needed in core when the process is swapped out. 15 */ 16 17 #define SHSIZE 32 18 19 struct user { 20 struct pcb u_pcb; 21 struct proc *u_procp; /* pointer to proc structure */ 22 int *u_ar0; /* address of users saved R0 */ 23 char u_comm[MAXNAMLEN + 1]; 24 25 /* syscall parameters, results and catches */ 26 int u_arg[8]; /* arguments to current system call */ 27 int *u_ap; /* pointer to arglist */ 28 label_t u_qsave; /* for non-local gotos on interrupts */ 29 char u_error; /* return error code */ 30 union { /* syscall return values */ 31 struct { 32 int R_val1; 33 int R_val2; 34 } u_rv; 35 #define r_val1 u_rv.R_val1 36 #define r_val2 u_rv.R_val2 37 off_t r_off; 38 time_t r_time; 39 } u_r; 40 char u_eosys; /* special action on end of syscall */ 41 42 /* 1.1 - processes and protection */ 43 short u_uid; /* effective user id */ 44 short u_gid; /* effective group id */ 45 int u_groups[NGROUPS]; /* groups, 0 terminated */ 46 short u_ruid; /* real user id */ 47 short u_rgid; /* real group id */ 48 49 /* 1.2 - memory management */ 50 size_t u_tsize; /* text size (clicks) */ 51 size_t u_dsize; /* data size (clicks) */ 52 size_t u_ssize; /* stack size (clicks) */ 53 struct dmap u_dmap; /* disk map for data segment */ 54 struct dmap u_smap; /* disk map for stack segment */ 55 struct dmap u_cdmap, u_csmap; /* shadows of u_dmap, u_smap, for 56 use of parent during fork */ 57 label_t u_ssave; /* label variable for swapping */ 58 size_t u_odsize, u_ossize; /* for (clumsy) expansion swaps */ 59 time_t u_outime; /* user time at last sample */ 60 61 /* 1.3 - signal management */ 62 int (*u_signal[NSIG])(); /* disposition of signals */ 63 long u_sigmask[NSIG]; /* signals to be blocked */ 64 int u_code; /* ``code'' to trap */ 65 caddr_t u_sigstack; /* 0 means no sigstack */ 66 int u_onsigstack; 67 68 /* 1.4 - descriptor management */ 69 struct file *u_ofile[NOFILE]; /* file structures for open files */ 70 char u_pofile[NOFILE]; /* per-process flags of open files */ 71 #define UF_EXCLOSE 0x1 /* auto-close on exec */ 72 #define UF_SHLOCK 0x2 /* shared lock present */ 73 #define UF_EXLOCK 0x4 /* exclusive lock present */ 74 #define UF_MAPPED 0x8 75 struct inode *u_cdir; /* current directory */ 76 struct inode *u_rdir; /* root directory of current process */ 77 struct tty *u_ttyp; /* controlling tty pointer */ 78 dev_t u_ttyd; /* controlling tty dev */ 79 short u_cmask; /* mask for file creation */ 80 81 /* 1.5 - timing and statistics */ 82 struct rusage u_ru; /* stats for this proc */ 83 struct rusage u_cru; /* sum of stats for reaped children */ 84 struct itimerval u_timer[3]; 85 int u_XXX[3]; 86 time_t u_start; 87 short u_acflag; 88 89 /* 1.6 - resource controls */ 90 struct rlimit u_rlimit[RLIM_NLIMITS]; 91 struct quota *u_quota; /* user's quota structure */ 92 int u_qflags; /* per process quota flags */ 93 94 /* BEGIN TRASH */ 95 char u_segflg; /* 0:user D; 1:system; 2:user I */ 96 caddr_t u_base; /* base address for IO */ 97 unsigned int u_count; /* bytes remaining for IO */ 98 off_t u_offset; /* offset in file for IO */ 99 union { 100 struct { /* header of executable file */ 101 int Ux_mag; /* magic number */ 102 unsigned Ux_tsize; /* text size */ 103 unsigned Ux_dsize; /* data size */ 104 unsigned Ux_bsize; /* bss size */ 105 unsigned Ux_ssize; /* symbol table size */ 106 unsigned Ux_entloc; /* entry location */ 107 unsigned Ux_unused; 108 unsigned Ux_relflg; 109 } Ux_A; 110 char ux_shell[SHSIZE]; /* #! and name of interpreter */ 111 } u_exdata; 112 #define ux_mag Ux_A.Ux_mag 113 #define ux_tsize Ux_A.Ux_tsize 114 #define ux_dsize Ux_A.Ux_dsize 115 #define ux_bsize Ux_A.Ux_bsize 116 #define ux_ssize Ux_A.Ux_ssize 117 #define ux_entloc Ux_A.Ux_entloc 118 #define ux_unused Ux_A.Ux_unused 119 #define ux_relflg Ux_A.Ux_relflg 120 caddr_t u_dirp; /* pathname pointer */ 121 struct direct u_dent; /* current directory entry */ 122 struct inode *u_pdir; /* inode of parent directory of dirp */ 123 /* END TRASH */ 124 struct uprof { /* profile arguments */ 125 short *pr_base; /* buffer base */ 126 unsigned pr_size; /* buffer size */ 127 unsigned pr_off; /* pc offset */ 128 unsigned pr_scale; /* pc scaling */ 129 } u_prof; 130 int u_stack[1]; 131 }; 132 133 /* u_eosys values */ 134 #define JUSTRETURN 0 135 #define RESTARTSYS 1 136 #define SIMULATERTI 2 137 #define REALLYRETURN 3 138 139 /* u_error codes */ 140 #include <errno.h> 141 142 #ifdef KERNEL 143 extern struct user u; 144 extern struct user swaputl; 145 extern struct user forkutl; 146 extern struct user xswaputl; 147 extern struct user xswap2utl; 148 extern struct user pushutl; 149 extern struct user vfutl; 150 #endif 151