procfs_linux.c revision 1.25.4.4
1 /* $NetBSD: procfs_linux.c,v 1.25.4.4 2007/01/12 01:04:11 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 1.25.4.4 2007/01/12 01:04:11 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 /* XXX elad - may need filtering. */ 135 136 bf = malloc(LBFSZ, M_TEMP, M_WAITOK); 137 138 offset += snprintf(&bf[offset], LBFSZ - offset, "Character devices:\n"); 139 if (offset >= LBFSZ) 140 goto out; 141 142 for (i = 0; i < max_devsw_convs; i++) { 143 if ((devsw_conv[i].d_name == NULL) || 144 (devsw_conv[i].d_cmajor == -1)) 145 continue; 146 147 offset += snprintf(&bf[offset], LBFSZ - offset, 148 "%3d %s\n", devsw_conv[i].d_cmajor, devsw_conv[i].d_name); 149 if (offset >= LBFSZ) 150 goto out; 151 } 152 153 offset += snprintf(&bf[offset], LBFSZ - offset, "\nBlock devices:\n"); 154 if (offset >= LBFSZ) 155 goto out; 156 157 for (i = 0; i < max_devsw_convs; i++) { 158 if ((devsw_conv[i].d_name == NULL) || 159 (devsw_conv[i].d_bmajor == -1)) 160 continue; 161 162 offset += snprintf(&bf[offset], LBFSZ - offset, 163 "%3d %s\n", devsw_conv[i].d_bmajor, devsw_conv[i].d_name); 164 if (offset >= LBFSZ) 165 goto out; 166 } 167 168 error = uiomove_frombuf(bf, offset, uio); 169 out: 170 free(bf, M_TEMP); 171 return error; 172 } 173 174 /* 175 * Linux compatible /proc/<pid>/stat. Only active when the -o linux 176 * mountflag is used. 177 */ 178 int 179 procfs_do_pid_stat(struct lwp *curl, struct lwp *l, 180 struct pfsnode *pfs, struct uio *uio) 181 { 182 char *bf; 183 struct proc *p = l->l_proc; 184 int len; 185 struct tty *tty = p->p_session->s_ttyp; 186 struct rusage *ru = &p->p_stats->p_ru; 187 struct rusage *cru = &p->p_stats->p_cru; 188 struct vmspace *vm; 189 struct vm_map *map; 190 struct vm_map_entry *entry; 191 unsigned long stext = 0, etext = 0, sstack = 0; 192 struct timeval rt; 193 int error = 0; 194 195 bf = malloc(LBFSZ, M_TEMP, M_WAITOK); 196 197 proc_vmspace_getref(p, &vm); 198 map = &vm->vm_map; 199 vm_map_lock_read(map); 200 201 for (entry = map->header.next; entry != &map->header; 202 entry = entry->next) { 203 if (UVM_ET_ISSUBMAP(entry)) 204 continue; 205 /* assume text is the first entry */ 206 if (stext == etext) { 207 stext = entry->start; 208 etext = entry->end; 209 break; 210 } 211 } 212 #ifdef LINUX_USRSTACK 213 if (strcmp(p->p_emul->e_name, "linux") == 0 && 214 LINUX_USRSTACK < USRSTACK) 215 sstack = (unsigned long) LINUX_USRSTACK; 216 else 217 #endif 218 sstack = (unsigned long) USRSTACK; 219 220 vm_map_unlock_read(map); 221 uvmspace_free(vm); 222 223 rw_enter(&proclist_lock, RW_READER); 224 mutex_enter(&p->p_mutex); 225 mutex_enter(&p->p_smutex); 226 227 calcru(p, NULL, NULL, NULL, &rt); 228 229 len = snprintf(bf, LBFSZ, 230 "%d (%s) %c %d %d %d %d %d " 231 "%u " 232 "%lu %lu %lu %lu %lu %lu %lu %lu " 233 "%d %d %d " 234 "%lu %lu %lu %lu %" PRIu64 " " 235 "%lu %lu %lu " 236 "%u %u " 237 "%u %u %u %u " 238 "%lu %lu %lu %d %d\n", 239 240 p->p_pid, 241 p->p_comm, 242 "0IR3SZD"[(p->p_stat > 6) ? 0 : (int)p->p_stat], 243 (p->p_pptr != NULL) ? p->p_pptr->p_pid : 0, 244 245 p->p_pgid, 246 p->p_session->s_sid, 247 tty ? tty->t_dev : 0, 248 (tty && tty->t_pgrp) ? tty->t_pgrp->pg_id : 0, 249 250 p->p_flag, 251 252 ru->ru_minflt, 253 cru->ru_minflt, 254 ru->ru_majflt, 255 cru->ru_majflt, 256 ru->ru_utime.tv_sec, 257 ru->ru_stime.tv_sec, 258 cru->ru_utime.tv_sec, 259 cru->ru_stime.tv_sec, 260 261 p->p_nice, /* XXX: priority */ 262 p->p_nice, 263 0, 264 265 rt.tv_sec, 266 p->p_stats->p_start.tv_sec, 267 ru->ru_ixrss + ru->ru_idrss + ru->ru_isrss, 268 ru->ru_maxrss, 269 p->p_rlimit[RLIMIT_RSS].rlim_cur, 270 271 stext, /* start code */ 272 etext, /* end code */ 273 sstack, /* mm start stack */ 274 0, /* XXX: pc */ 275 0, /* XXX: sp */ 276 p->p_sigpend.sp_set.__bits[0], /* XXX: pending */ 277 0, /* XXX: held */ 278 p->p_sigctx.ps_sigignore.__bits[0], /* ignored */ 279 p->p_sigctx.ps_sigcatch.__bits[0], /* caught */ 280 281 (unsigned long)(intptr_t)l->l_wchan, 282 ru->ru_nvcsw, 283 ru->ru_nivcsw, 284 p->p_exitsig, 285 0); /* XXX: processor */ 286 287 mutex_exit(&p->p_smutex); 288 mutex_exit(&p->p_mutex); 289 rw_exit(&proclist_lock); 290 291 if (len == 0) 292 goto out; 293 294 error = uiomove_frombuf(bf, len, uio); 295 out: 296 free(bf, M_TEMP); 297 return error; 298 } 299 300 int 301 procfs_docpuinfo(struct lwp *curl, struct proc *p, 302 struct pfsnode *pfs, struct uio *uio) 303 { 304 int len = LBFSZ; 305 char *bf = malloc(len, M_TEMP, M_WAITOK); 306 int error; 307 308 if (procfs_getcpuinfstr(bf, &len) < 0) { 309 error = ENOSPC; 310 goto done; 311 } 312 313 if (len == 0) { 314 error = 0; 315 goto done; 316 } 317 318 error = uiomove_frombuf(bf, len, uio); 319 done: 320 free(bf, M_TEMP); 321 return error; 322 } 323 324 int 325 procfs_douptime(struct lwp *curl, struct proc *p, 326 struct pfsnode *pfs, struct uio *uio) 327 { 328 char *bf; 329 int len; 330 struct timeval runtime; 331 u_int64_t idle; 332 int error = 0; 333 334 bf = malloc(LBFSZ, M_TEMP, M_WAITOK); 335 336 timersub(&curcpu()->ci_schedstate.spc_runtime, &boottime, &runtime); 337 idle = curcpu()->ci_schedstate.spc_cp_time[CP_IDLE]; 338 len = snprintf(bf, LBFSZ, 339 "%lu.%02lu %" PRIu64 ".%02" PRIu64 "\n", 340 runtime.tv_sec, runtime.tv_usec / 10000, 341 idle / hz, (((idle % hz) * 100) / hz) % 100); 342 343 if (len == 0) 344 goto out; 345 346 error = uiomove_frombuf(bf, len, uio); 347 out: 348 free(bf, M_TEMP); 349 return error; 350 } 351 352 int 353 procfs_domounts(struct lwp *curl, struct proc *p, 354 struct pfsnode *pfs, struct uio *uio) 355 { 356 char *bf, *mtab = NULL; 357 const char *fsname; 358 size_t len, mtabsz = 0; 359 struct mount *mp, *nmp; 360 struct statvfs *sfs; 361 int error = 0; 362 363 /* XXX elad - may need filtering. */ 364 365 bf = malloc(LBFSZ, M_TEMP, M_WAITOK); 366 simple_lock(&mountlist_slock); 367 for (mp = CIRCLEQ_FIRST(&mountlist); mp != (void *)&mountlist; 368 mp = nmp) { 369 if (vfs_busy(mp, LK_NOWAIT, &mountlist_slock)) { 370 nmp = CIRCLEQ_NEXT(mp, mnt_list); 371 continue; 372 } 373 374 sfs = &mp->mnt_stat; 375 376 /* Linux uses different names for some filesystems */ 377 fsname = sfs->f_fstypename; 378 if (strcmp(fsname, "procfs") == 0) 379 fsname = "proc"; 380 else if (strcmp(fsname, "ext2fs") == 0) 381 fsname = "ext2"; 382 383 len = snprintf(bf, LBFSZ, "%s %s %s %s%s%s%s%s%s 0 0\n", 384 sfs->f_mntfromname, 385 sfs->f_mntonname, 386 fsname, 387 (mp->mnt_flag & MNT_RDONLY) ? "ro" : "rw", 388 (mp->mnt_flag & MNT_NOSUID) ? ",nosuid" : "", 389 (mp->mnt_flag & MNT_NOEXEC) ? ",noexec" : "", 390 (mp->mnt_flag & MNT_NODEV) ? ",nodev" : "", 391 (mp->mnt_flag & MNT_SYNCHRONOUS) ? ",sync" : "", 392 (mp->mnt_flag & MNT_NOATIME) ? ",noatime" : "" 393 ); 394 395 mtab = realloc(mtab, mtabsz + len, M_TEMP, M_WAITOK); 396 memcpy(mtab + mtabsz, bf, len); 397 mtabsz += len; 398 399 simple_lock(&mountlist_slock); 400 nmp = CIRCLEQ_NEXT(mp, mnt_list); 401 vfs_unbusy(mp); 402 } 403 simple_unlock(&mountlist_slock); 404 free(bf, M_TEMP); 405 406 if (mtabsz > 0) { 407 error = uiomove_frombuf(mtab, mtabsz, uio); 408 free(mtab, M_TEMP); 409 } 410 411 return error; 412 } 413
Indexes created Thu Sep 25 16:09:42 GMT 2025