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/*
* This file is part of libsamsung-ipc.
*
* Copyright (C) 2013-2014 Paul Kocialkowski <contact@paulk.fr>
* Copyright (C) 2017 Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de>
* Copyright (C) 2020 Tony Garnock-Jones <tonyg@leastfixedpoint.com>
* Copyright (C) 2021 Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
*
* libsamsung-ipc is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* libsamsung-ipc is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with libsamsung-ipc. If not, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <fcntl.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <samsung-ipc.h>
static char const * const partitions_dirnames[] = {
"/dev/disk/by-partlabel/", /* GNU/Linux */
"/dev/block/by-name/", /* Android */
NULL
};
int open_android_modem_partition(struct ipc_client *client,
char const * const *path_names)
{
int i;
for (i = 0; path_names[i] != NULL; i++) {
char const * const path = path_names[i];
int fd;
ipc_client_log(client, "%s: Trying to open %s",
__func__, path);
fd = open(path, O_RDONLY);
if (fd == -1) {
if (errno == ENOENT)
continue;
/* Normally errno should be passed to the caller here */
return -1;
}
return fd;
}
errno = ENOENT;
return -1;
}
int open_android_modem_partition_by_name(struct ipc_client *client,
const char *name, char **out_path)
{
int i;
int rc;
for (i = 0; partitions_dirnames[i] != NULL; i++) {
char *path = NULL;
int fd;
size_t len;
len = strlen(partitions_dirnames[i]) + strlen(name) + 1;
path = calloc(1, len);
if (path == NULL) {
rc = errno;
ipc_client_log(client,
"%s: calloc failed with error %d: %s",
__func__, rc, strerror(rc));
return -errno;
}
strncpy(path, partitions_dirnames[i],
strlen(partitions_dirnames[i]));
strcat(path, name);
ipc_client_log(client, "%s: Trying to open %s",
__func__, path);
fd = open(path, O_RDONLY);
if (fd == -1) {
rc = -errno;
if (out_path)
*out_path = path;
else
free(path);
if (rc == -ENOENT)
continue;
errno = -rc;
return -1;
}
if (out_path)
*out_path = path;
else
free(path);
return fd;
}
errno = ENOENT;
return -1;
}
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