procfs_linux.c revision 1.25.4.3
1 /* $NetBSD: procfs_linux.c,v 1.25.4.3 2006/11/18 21:39:29 ad Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Frank van der Linden for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: procfs_linux.c,v 1.25.4.3 2006/11/18 21:39:29 ad Exp $"); 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/time.h> 44 #include <sys/kernel.h> 45 #include <sys/proc.h> 46 #include <sys/vnode.h> 47 #include <sys/exec.h> 48 #include <sys/resource.h> 49 #include <sys/resourcevar.h> 50 #include <sys/signal.h> 51 #include <sys/signalvar.h> 52 #include <sys/tty.h> 53 #include <sys/malloc.h> 54 #include <sys/mount.h> 55 #include <sys/conf.h> 56 57 #include <miscfs/procfs/procfs.h> 58 #include <compat/linux/common/linux_exec.h> 59 60 #include <uvm/uvm_extern.h> 61 #include <uvm/uvm.h> 62 63 extern struct devsw_conv *devsw_conv; 64 extern int max_devsw_convs; 65 66 #define PGTOB(p) ((unsigned long)(p) << PAGE_SHIFT) 67 #define PGTOKB(p) ((unsigned long)(p) << (PAGE_SHIFT - 10)) 68 69 #define LBFSZ (8 * 1024) 70 71 /* 72 * Linux compatible /proc/meminfo. Only active when the -o linux 73 * mountflag is used. 74 */ 75 int 76 procfs_domeminfo(struct lwp *curl, struct proc *p, 77 struct pfsnode *pfs, struct uio *uio) 78 { 79 char *bf; 80 int len; 81 int error = 0; 82 83 bf = malloc(LBFSZ, M_TEMP, M_WAITOK); 84 85 len = snprintf(bf, LBFSZ, 86 " total: used: free: shared: buffers: cached:\n" 87 "Mem: %8lu %8lu %8lu %8lu %8lu %8lu\n" 88 "Swap: %8lu %8lu %8lu\n" 89 "MemTotal: %8lu kB\n" 90 "MemFree: %8lu kB\n" 91 "MemShared: %8lu kB\n" 92 "Buffers: %8lu kB\n" 93 "Cached: %8lu kB\n" 94 "SwapTotal: %8lu kB\n" 95 "SwapFree: %8lu kB\n", 96 PGTOB(uvmexp.npages), 97 PGTOB(uvmexp.npages - uvmexp.free), 98 PGTOB(uvmexp.free), 99 0L, 100 PGTOB(uvmexp.filepages), 101 PGTOB(uvmexp.anonpages + uvmexp.filepages + uvmexp.execpages), 102 PGTOB(uvmexp.swpages), 103 PGTOB(uvmexp.swpginuse), 104 PGTOB(uvmexp.swpages - uvmexp.swpginuse), 105 PGTOKB(uvmexp.npages), 106 PGTOKB(uvmexp.free), 107 0L, 108 PGTOKB(uvmexp.filepages), 109 PGTOKB(uvmexp.anonpages + uvmexp.filepages + uvmexp.execpages), 110 PGTOKB(uvmexp.swpages), 111 PGTOKB(uvmexp.swpages - uvmexp.swpginuse)); 112 113 if (len == 0) 114 goto out; 115 116 error = uiomove_frombuf(bf, len, uio); 117 out: 118 free(bf, M_TEMP); 119 return error; 120 } 121 122 /* 123 * Linux compatible /proc/devices. Only active when the -o linux 124 * mountflag is used. 125 */ 126 int 127 procfs_dodevices(struct lwp *curl, struct proc *p, 128 struct pfsnode *pfs, struct uio *uio) 129 { 130 char *bf; 131 int offset = 0; 132 int i, error = ENAMETOOLONG; 133 134 bf = malloc(LBFSZ, M_TEMP, M_WAITOK); 135 136 offset += snprintf(&bf[offset], LBFSZ - offset, "Character devices:\n"); 137 if (offset >= LBFSZ) 138 goto out; 139 140 for (i = 0; i < max_devsw_convs; i++) { 141 if ((devsw_conv[i].d_name == NULL) || 142 (devsw_conv[i].d_cmajor == -1)) 143 continue; 144 145 offset += snprintf(&bf[offset], LBFSZ - offset, 146 "%3d %s\n", devsw_conv[i].d_cmajor, devsw_conv[i].d_name); 147 if (offset >= LBFSZ) 148 goto out; 149 } 150 151 offset += snprintf(&bf[offset], LBFSZ - offset, "\nBlock devices:\n"); 152 if (offset >= LBFSZ) 153 goto out; 154 155 for (i = 0; i < max_devsw_convs; i++) { 156 if ((devsw_conv[i].d_name == NULL) || 157 (devsw_conv[i].d_bmajor == -1)) 158 continue; 159 160 offset += snprintf(&bf[offset], LBFSZ - offset, 161 "%3d %s\n", devsw_conv[i].d_bmajor, devsw_conv[i].d_name); 162 if (offset >= LBFSZ) 163 goto out; 164 } 165 166 error = uiomove_frombuf(bf, offset, uio); 167 out: 168 free(bf, M_TEMP); 169 return error; 170 } 171 172 /* 173 * Linux compatible /proc/<pid>/stat. Only active when the -o linux 174 * mountflag is used. 175 */ 176 int 177 procfs_do_pid_stat(struct lwp *curl, struct lwp *l, 178 struct pfsnode *pfs, struct uio *uio) 179 { 180 char *bf; 181 struct proc *p = l->l_proc; 182 int len; 183 struct tty *tty = p->p_session->s_ttyp; 184 struct rusage *ru = &p->p_stats->p_ru; 185 struct rusage *cru = &p->p_stats->p_cru; 186 struct vmspace *vm; 187 struct vm_map *map; 188 struct vm_map_entry *entry; 189 unsigned long stext = 0, etext = 0, sstack = 0; 190 struct timeval rt; 191 int error = 0; 192 193 bf = malloc(LBFSZ, M_TEMP, M_WAITOK); 194 195 proc_vmspace_getref(p, &vm); 196 map = &vm->vm_map; 197 vm_map_lock_read(map); 198 199 for (entry = map->header.next; entry != &map->header; 200 entry = entry->next) { 201 if (UVM_ET_ISSUBMAP(entry)) 202 continue; 203 /* assume text is the first entry */ 204 if (stext == etext) { 205 stext = entry->start; 206 etext = entry->end; 207 break; 208 } 209 } 210 #ifdef LINUX_USRSTACK 211 if (strcmp(p->p_emul->e_name, "linux") == 0 && 212 LINUX_USRSTACK < USRSTACK) 213 sstack = (unsigned long) LINUX_USRSTACK; 214 else 215 #endif 216 sstack = (unsigned long) USRSTACK; 217 218 vm_map_unlock_read(map); 219 uvmspace_free(vm); 220 221 rw_enter(&proclist_lock, RW_READER); 222 mutex_enter(&p->p_mutex); 223 mutex_enter(&p->p_smutex); 224 225 calcru(p, NULL, NULL, NULL, &rt); 226 227 len = snprintf(bf, LBFSZ, 228 "%d (%s) %c %d %d %d %d %d " 229 "%u " 230 "%lu %lu %lu %lu %lu %lu %lu %lu " 231 "%d %d %d " 232 "%lu %lu %lu %lu %" PRIu64 " " 233 "%lu %lu %lu " 234 "%u %u " 235 "%u %u %u %u " 236 "%lu %lu %lu %d %d\n", 237 238 p->p_pid, 239 p->p_comm, 240 "0IR3SZD"[(p->p_stat > 6) ? 0 : (int)p->p_stat], 241 (p->p_pptr != NULL) ? p->p_pptr->p_pid : 0, 242 243 p->p_pgid, 244 p->p_session->s_sid, 245 tty ? tty->t_dev : 0, 246 (tty && tty->t_pgrp) ? tty->t_pgrp->pg_id : 0, 247 248 p->p_flag, 249 250 ru->ru_minflt, 251 cru->ru_minflt, 252 ru->ru_majflt, 253 cru->ru_majflt, 254 ru->ru_utime.tv_sec, 255 ru->ru_stime.tv_sec, 256 cru->ru_utime.tv_sec, 257 cru->ru_stime.tv_sec, 258 259 p->p_nice, /* XXX: priority */ 260 p->p_nice, 261 0, 262 263 rt.tv_sec, 264 p->p_stats->p_start.tv_sec, 265 ru->ru_ixrss + ru->ru_idrss + ru->ru_isrss, 266 ru->ru_maxrss, 267 p->p_rlimit[RLIMIT_RSS].rlim_cur, 268 269 stext, /* start code */ 270 etext, /* end code */ 271 sstack, /* mm start stack */ 272 0, /* XXX: pc */ 273 0, /* XXX: sp */ 274 p->p_sigpend.sp_set.__bits[0], /* XXX: pending */ 275 0, /* XXX: held */ 276 p->p_sigctx.ps_sigignore.__bits[0], /* ignored */ 277 p->p_sigctx.ps_sigcatch.__bits[0], /* caught */ 278 279 (unsigned long)(intptr_t)l->l_wchan, 280 ru->ru_nvcsw, 281 ru->ru_nivcsw, 282 p->p_exitsig, 283 0); /* XXX: processor */ 284 285 mutex_exit(&p->p_smutex); 286 mutex_exit(&p->p_mutex); 287 rw_exit(&proclist_lock); 288 289 if (len == 0) 290 goto out; 291 292 error = uiomove_frombuf(bf, len, uio); 293 out: 294 free(bf, M_TEMP); 295 return error; 296 } 297 298 int 299 procfs_docpuinfo(struct lwp *curl, struct proc *p, 300 struct pfsnode *pfs, struct uio *uio) 301 { 302 int len = LBFSZ; 303 char *bf = malloc(len, M_TEMP, M_WAITOK); 304 int error; 305 306 if (procfs_getcpuinfstr(bf, &len) < 0) { 307 error = ENOSPC; 308 goto done; 309 } 310 311 if (len == 0) { 312 error = 0; 313 goto done; 314 } 315 316 error = uiomove_frombuf(bf, len, uio); 317 done: 318 free(bf, M_TEMP); 319 return error; 320 } 321 322 int 323 procfs_douptime(struct lwp *curl, struct proc *p, 324 struct pfsnode *pfs, struct uio *uio) 325 { 326 char *bf; 327 int len; 328 struct timeval runtime; 329 u_int64_t idle; 330 int error = 0; 331 332 bf = malloc(LBFSZ, M_TEMP, M_WAITOK); 333 334 timersub(&curcpu()->ci_schedstate.spc_runtime, &boottime, &runtime); 335 idle = curcpu()->ci_schedstate.spc_cp_time[CP_IDLE]; 336 len = snprintf(bf, LBFSZ, 337 "%lu.%02lu %" PRIu64 ".%02" PRIu64 "\n", 338 runtime.tv_sec, runtime.tv_usec / 10000, 339 idle / hz, (((idle % hz) * 100) / hz) % 100); 340 341 if (len == 0) 342 goto out; 343 344 error = uiomove_frombuf(bf, len, uio); 345 out: 346 free(bf, M_TEMP); 347 return error; 348 } 349 350 int 351 procfs_domounts(struct lwp *curl, struct proc *p, 352 struct pfsnode *pfs, struct uio *uio) 353 { 354 char *bf, *mtab = NULL; 355 const char *fsname; 356 size_t len, mtabsz = 0; 357 struct mount *mp, *nmp; 358 struct statvfs *sfs; 359 int error = 0; 360 361 bf = malloc(LBFSZ, M_TEMP, M_WAITOK); 362 simple_lock(&mountlist_slock); 363 for (mp = CIRCLEQ_FIRST(&mountlist); mp != (void *)&mountlist; 364 mp = nmp) { 365 if (vfs_busy(mp, LK_NOWAIT, &mountlist_slock)) { 366 nmp = CIRCLEQ_NEXT(mp, mnt_list); 367 continue; 368 } 369 370 sfs = &mp->mnt_stat; 371 372 /* Linux uses different names for some filesystems */ 373 fsname = sfs->f_fstypename; 374 if (strcmp(fsname, "procfs") == 0) 375 fsname = "proc"; 376 else if (strcmp(fsname, "ext2fs") == 0) 377 fsname = "ext2"; 378 379 len = snprintf(bf, LBFSZ, "%s %s %s %s%s%s%s%s%s 0 0\n", 380 sfs->f_mntfromname, 381 sfs->f_mntonname, 382 fsname, 383 (mp->mnt_flag & MNT_RDONLY) ? "ro" : "rw", 384 (mp->mnt_flag & MNT_NOSUID) ? ",nosuid" : "", 385 (mp->mnt_flag & MNT_NOEXEC) ? ",noexec" : "", 386 (mp->mnt_flag & MNT_NODEV) ? ",nodev" : "", 387 (mp->mnt_flag & MNT_SYNCHRONOUS) ? ",sync" : "", 388 (mp->mnt_flag & MNT_NOATIME) ? ",noatime" : "" 389 ); 390 391 mtab = realloc(mtab, mtabsz + len, M_TEMP, M_WAITOK); 392 memcpy(mtab + mtabsz, bf, len); 393 mtabsz += len; 394 395 simple_lock(&mountlist_slock); 396 nmp = CIRCLEQ_NEXT(mp, mnt_list); 397 vfs_unbusy(mp); 398 } 399 simple_unlock(&mountlist_slock); 400 free(bf, M_TEMP); 401 402 if (mtabsz > 0) { 403 error = uiomove_frombuf(mtab, mtabsz, uio); 404 free(mtab, M_TEMP); 405 } 406 407 return error; 408 } 409
Indexes created Fri Sep 26 20:09:58 GMT 2025