Martin Baulig
a5dd7e9063
It changes the return values of all sysdeps functions which were previosly returning void to int. This is the first step to implement better error handling in LibGTop. Martin 1999-10-24 Martin Baulig <martin@home-of-linux.org> * include/glibtop/*.h (glibtop_get_*, glibtop_init*): Changed the return value of all `glibtop_get_<feature>_* ()' and all `glibtop_init_<feature>_* ()' functions from void to int. * features.def: Reflect changes of the return values. * sysdeps/*/*.c: Reflect changes of the return values.
125 lines
3.8 KiB
C
125 lines
3.8 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 <glibtop_private.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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}
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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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glibtop_map_entry *retval = NULL;
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libgtop_proc_maps_t *maps;
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size_t count, max_len, i;
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int ret;
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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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/* Get number of map entries. */
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count = glibtop_get_proc_data_proc_maps_s (server, pid, NULL, 0);
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/* Allocate memory. */
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maps = glibtop_calloc_r (server, count, sizeof (libgtop_proc_maps_t));
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max_len = count * sizeof (libgtop_proc_maps_t);
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ret = glibtop_get_proc_data_proc_maps_s (server, pid, maps, max_len);
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if (ret < 0) {
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glibtop_free_r (server, maps);
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return NULL;
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}
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/* Calculate number of map entries. */
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count = ret / sizeof (libgtop_proc_maps_t);
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/* Allocate memory for the result. */
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retval = glibtop_calloc_r (server, count, sizeof (glibtop_map_entry));
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for (i = 0; i < count; i++) {
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char *filename;
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retval [i].start = maps [i].header.start;
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retval [i].end = maps [i].header.end;
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retval [i].offset = maps [i].header.offset;
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if (maps [i].header.perm & LIBGTOP_VM_READ)
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retval [i].perm |= GLIBTOP_MAP_PERM_READ;
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if (maps [i].header.perm & LIBGTOP_VM_WRITE)
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retval [i].perm |= GLIBTOP_MAP_PERM_WRITE;
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if (maps [i].header.perm & LIBGTOP_VM_EXEC)
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retval [i].perm |= GLIBTOP_MAP_PERM_EXECUTE;
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if (maps [i].header.perm & LIBGTOP_VM_SHARED)
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retval [i].perm |= GLIBTOP_MAP_PERM_SHARED;
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if (!(maps [i].header.perm & LIBGTOP_VM_MAYSHARE))
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retval [i].perm |= GLIBTOP_MAP_PERM_PRIVATE;
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retval [i].device = maps [i].header.device;
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retval [i].inode = maps [i].header.inode;
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filename = maps [i].filename;
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filename += maps [i].header.filename_offset;
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strncpy (retval [i].filename, filename, GLIBTOP_MAP_FILENAME_LEN);
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retval [i].filename [GLIBTOP_MAP_FILENAME_LEN-1] = '\0';
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retval [i].flags = _glibtop_sysdeps_map_entry;
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}
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/* Free map entries. */
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glibtop_free_r (server, maps);
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/* Write retval. */
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buf->number = count;
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buf->size = sizeof (glibtop_map_entry);
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buf->total = buf->number * sizeof (glibtop_map_entry);
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buf->flags = _glibtop_sysdeps_proc_map;
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return retval;
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}
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