115 lines
3.3 KiB
C
115 lines
3.3 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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#include <errno.h>
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#include <alloca.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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/* Init function. */
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void
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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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}
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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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int fd, i, nmaps;
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prmap_t *maps;
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glibtop_map_entry *entry;
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struct stat inode;
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char buffer[BUFSIZ];
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memset (buf, 0, sizeof (glibtop_proc_map));
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sprintf(buffer, "/proc/%d/map", (int)pid);
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if((fd = open(buffer, O_RDONLY)) < 0)
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{
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if(errno != EPERM && errno != EACCES)
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glibtop_warn_io_r(server, "open (%s)", buffer);
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return NULL;
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}
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if(fstat(fd, &inode) < 0)
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{
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if(errno != EOVERFLOW)
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glibtop_warn_io_r(server, "fstat (%s)", buffer);
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/* else call daemon for 64-bit support */
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close(fd);
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return NULL;
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}
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maps = alloca(inode.st_size);
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nmaps = inode.st_size / sizeof(prmap_t);
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if(pread(fd, maps, inode.st_size, 0) != inode.st_size)
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{
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glibtop_warn_io_r(server, "pread (%s)", buffer);
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close(fd);
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return NULL;
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}
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close(fd);
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if(!(entry = glibtop_malloc_r(server, nmaps * sizeof(glibtop_map_entry))))
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return NULL;
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buf->number = nmaps;
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buf->size = sizeof(glibtop_map_entry);
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buf->total = nmaps * sizeof(glibtop_map_entry);
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memset(entry, 0, nmaps * sizeof(glibtop_map_entry));
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for(i = 0; i < nmaps; ++i)
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{
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entry[i].start = maps[i].pr_vaddr;
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entry[i].end = maps[i].pr_vaddr + maps[i].pr_size;
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entry[i].offset = maps[i].pr_offset;
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if(maps[i].pr_mflags & MA_READ)
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entry[i].perm |= GLIBTOP_MAP_PERM_READ;
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if(maps[i].pr_mflags & MA_WRITE)
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entry[i].perm |= GLIBTOP_MAP_PERM_WRITE;
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if(maps[i].pr_mflags & MA_EXEC)
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entry[i].perm |= GLIBTOP_MAP_PERM_EXECUTE;
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if(maps[i].pr_mflags & MA_SHARED)
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entry[i].perm |= GLIBTOP_MAP_PERM_SHARED;
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else
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entry[i].perm |= GLIBTOP_MAP_PERM_PRIVATE;
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entry[i].flags = _glibtop_sysdeps_map_entry;
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}
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buf->flags = _glibtop_sysdeps_proc_map;
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return entry;
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}
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