141 lines
3.7 KiB
C
141 lines
3.7 KiB
C
/* $Id$ */
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/* Copyright (C) 1998-99 Martin Baulig
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This file is part of LibGTop 1.0.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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#include <glibtop.h>
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#include <glibtop/error.h>
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#include <glibtop/xmalloc.h>
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#include <glibtop/procmap.h>
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static const unsigned long _glibtop_sysdeps_proc_map =
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(1L << GLIBTOP_PROC_MAP_NUMBER) + (1L << GLIBTOP_PROC_MAP_TOTAL) +
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(1L << GLIBTOP_PROC_MAP_SIZE);
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static const unsigned long _glibtop_sysdeps_map_entry =
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(1L << GLIBTOP_MAP_ENTRY_START) + (1L << GLIBTOP_MAP_ENTRY_END) +
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(1L << GLIBTOP_MAP_ENTRY_OFFSET) + (1L << GLIBTOP_MAP_ENTRY_PERM) +
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(1L << GLIBTOP_MAP_ENTRY_INODE) + (1L << GLIBTOP_MAP_ENTRY_DEVICE) +
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(1L << GLIBTOP_MAP_ENTRY_FILENAME);
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/* Init function. */
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int
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glibtop_init_proc_map_s (glibtop *server)
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{
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server->sysdeps.proc_map = _glibtop_sysdeps_proc_map;
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return 0;
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}
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/* Provides detailed information about a process. */
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glibtop_map_entry *
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glibtop_get_proc_map_s (glibtop *server, glibtop_proc_map *buf, pid_t pid)
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{
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char fn [BUFSIZ];
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glibtop_map_entry *entry_list = NULL;
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int rv, n = 0;
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FILE *maps;
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glibtop_init_s (&server, GLIBTOP_SYSDEPS_PROC_MAP, 0);
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memset (buf, 0, sizeof (glibtop_proc_map));
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sprintf (fn, "/proc/%d/maps", pid);
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maps = fopen (fn, "r");
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if (!maps) return NULL;
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do {
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short dev_major, dev_minor;
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unsigned long start, end, offset, inode, perm;
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char flags [5], *format;
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size_t size;
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if (sizeof (void*) == 8)
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format = "%16lx-%16lx %4c\n %16lx %02hx:%02hx %ld";
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else
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format = "%08lx-%08lx %4c\n %08lx %02hx:%02hx %ld";
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rv = fscanf (maps, format,
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&start, &end, flags, &offset,
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&dev_major, &dev_minor, &inode);
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flags [4] = 0;
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/* Compute access permissions. */
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perm = 0;
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if (flags [0] == 'r')
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perm |= GLIBTOP_MAP_PERM_READ;
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if (flags [1] == 'w')
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perm |= GLIBTOP_MAP_PERM_WRITE;
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if (flags [2] == 'x')
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perm |= GLIBTOP_MAP_PERM_EXECUTE;
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if (flags [3] == 's')
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perm |= GLIBTOP_MAP_PERM_SHARED;
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if (flags [3] == 'p')
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perm |= GLIBTOP_MAP_PERM_PRIVATE;
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/* Read filename. */
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fn [0] = fgetc (maps);
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if (fn [0] != '\n' && fn [0] != EOF) {
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fscanf (maps, "%*[ ]%[^\n]\n", fn);
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} else fn [0] = 0;
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size = (n+1) * sizeof (glibtop_map_entry);
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entry_list = glibtop_realloc_r (server, entry_list, size);
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memset (&(entry_list [n]), 0, sizeof (glibtop_map_entry));
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entry_list [n].flags = _glibtop_sysdeps_map_entry;
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entry_list [n].start = (u_int64_t) start;
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entry_list [n].end = (u_int64_t) end;
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entry_list [n].offset = (u_int64_t) offset;
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entry_list [n].perm = (u_int64_t) perm;
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entry_list [n].device = (u_int64_t) (dev_major << 8) +
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(u_int64_t) dev_minor;
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entry_list [n].inode = (u_int64_t) inode;
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strncpy (entry_list [n].filename, fn, GLIBTOP_MAP_FILENAME_LEN);
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entry_list [n].filename [GLIBTOP_MAP_FILENAME_LEN] = 0;
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n++;
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} while (rv != EOF && rv && fn [0] != EOF);
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fclose (maps);
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buf->number = n;
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buf->size = sizeof (glibtop_map_entry);
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buf->total = n * sizeof (glibtop_map_entry);
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return entry_list;
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}
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