-/* File related stuff
-
- Copyright (C) 1999 Benjamin Herrenschmidt
-
- This program 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.
-
- This program 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 this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+/*
+ * file.c - Filesystem related interfaces
+ *
+ * Copyright (C) 2001, 2002 Ethan Benson
+ *
+ * parse_device_path()
+ *
+ * Copyright (C) 2001 Colin Walters
+ *
+ * Copyright (C) 1999 Benjamin Herrenschmidt
+ *
+ * This program 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.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
#include "ctype.h"
#include "types.h"
/* This function follows the device path in the devtree and separates
the device name, partition number, and other datas (mostly file name)
the string passed in parameters is changed since 0 are put in place
- of some separators to terminate the various strings
- */
+ of some separators to terminate the various strings.
+
+ when a default device is supplied imagepath will be assumed to be a
+ plain filename unless it contains a : otherwise if defaultdev is
+ NULL imagepath will be assumed to be a device path.
+
+ returns 1 on success 0 on failure.
+
+ Supported examples:
+ - /pci@80000000/pci-bridge@d/ADPT,2930CU@2/@1:4
+ - /pci@80000000/pci-bridge@d/ADPT,2930CU@2/@1:4,/boot/vmlinux
+ - hd:3,/boot/vmlinux
+ - enet:10.0.0.1,/tftpboot/vmlinux
+ - enet:,/tftpboot/vmlinux
+ - enet:bootp
+ - enet:0
+ Supported only if defdevice == NULL
+ - disc
+ - any other device path lacking a :
+ Unsupported examples:
+ - hd:2,\\:tbxi <- no filename will be detected due to the extra :
+ - enet:192.168.2.1,bootme,c-iaddr,g-iaddr,subnet-mask,bootp-retries,tftp-retries */
int
parse_device_path(char *imagepath, char *defdevice, int defpart,
char *deffile, struct boot_fspec_t *result)
{
char *ptr;
- char *ipath = strdup(imagepath);
- char *defdev = strdup(defdevice);
+ char *ipath = NULL;
+ char *defdev = NULL;
result->dev = NULL;
result->part = -1;
result->file = NULL;
- if (!strstr(defdev, "ethernet") && !strstr(defdev, "enet")) {
- if ((ptr = strrchr(defdev, ':')) != NULL)
- *ptr = 0; /* remove trailing : from defdevice if necessary */
+ if (!imagepath)
+ return 0;
+ else
+ ipath = strdup(imagepath);
+
+ if (defdevice)
+ defdev = strdup(defdevice);
+
+ if (defdev) {
+ if (!strstr(defdev, "ethernet") && !strstr(defdev, "enet")) {
+ if ((ptr = strrchr(defdev, ':')) != NULL)
+ *ptr = 0; /* remove trailing : from defdevice if necessary */
+ }
}
- if (!imagepath)
- goto punt;
+ /* if there is no : then there is no filename or partition. must
+ use strrchr() since enet:,10.0.0.1,file is legal */
- if ((ptr = strrchr(ipath, ',')) != NULL) {
- result->file = strdup(ptr+1);
- /* Trim the filename off */
- *ptr = 0;
+ if (strchr(ipath, ':') != NULL) {
+ if ((ptr = strrchr(ipath, ',')) != NULL) {
+ char *colon = strrchr(ipath, ':');
+ /* If a ':' occurs *after* a ',', then we assume that there is
+ no filename */
+ if (!colon || colon < ptr) {
+ result->file = strdup(ptr+1);
+ /* Trim the filename off */
+ *ptr = 0;
+ }
+ }
}
if (strstr(ipath, "ethernet") || strstr(ipath, "enet"))
*ptr = 0;
result->dev = strdup(ipath);
} else
- result->dev = strdup(ipath);
+ result->dev = strdup(ipath);
else if ((ptr = strchr(ipath, ':')) != NULL) {
*ptr = 0;
result->dev = strdup(ipath);
if (*(ptr+1))
result->part = simple_strtol(ptr+1, NULL, 10);
+ } else if (!defdev) {
+ result->dev = strdup(ipath);
} else if (strlen(ipath)) {
result->file = strdup(ipath);
} else {
return 0;
}
-
- punt:
- if (!result->dev)
+
+ if (!result->dev && defdev)
result->dev = strdup(defdev);
if (result->part < 0)
if (!result->file)
result->file = strdup(deffile);
+
free(ipath);
+ if (defdev)
+ free(defdev);
return 1;
}
const char* file_name,
int partition)
{
- struct partition_t* parts;
- struct partition_t* p;
- struct partition_t* found;
+ struct partition_t* parts;
+ struct partition_t* p;
+ struct partition_t* found;
- parts = partitions_lookup(dev_name);
- found = NULL;
+ parts = partitions_lookup(dev_name);
+ found = NULL;
#if DEBUG
- if (parts)
- prom_printf("partitions:\n");
- else
- prom_printf("no partitions found.\n");
+ if (parts)
+ prom_printf("partitions:\n");
+ else
+ prom_printf("no partitions found.\n");
#endif
- for (p = parts; p && !found; p=p->next) {
- DEBUG_F("number: %02d, start: 0x%08lx, length: 0x%08lx\n",
- p->part_number, p->part_start, p->part_size );
- if (partition == -1) {
- file->fs = fs_open( file, dev_name, p, file_name );
- if (file->fs != NULL)
- goto bail;
- }
- if ((partition >= 0) && (partition == p->part_number))
- found = p;
+ for (p = parts; p && !found; p=p->next) {
+ DEBUG_F("number: %02d, start: 0x%08lx, length: 0x%08lx\n",
+ p->part_number, p->part_start, p->part_size );
+ if (partition == -1) {
+ file->fs = fs_open( file, dev_name, p, file_name );
+ if (file->fs == NULL || fserrorno != FILE_ERR_OK)
+ continue;
+ else {
+ partition = p->part_number;
+ goto done;
+ }
+ }
+ if ((partition >= 0) && (partition == p->part_number))
+ found = p;
#if DEBUG
- if (found)
- prom_printf(" (match)\n");
+ if (found)
+ prom_printf(" (match)\n");
#endif
- }
+ }
- /* Note: we don't skip when found is NULL since we can, in some
- * cases, let OF figure out a default partition.
- */
- DEBUG_F( "Using OF defaults.. (found = %p)\n", found );
- file->fs = fs_open( file, dev_name, found, file_name );
+ /* Note: we don't skip when found is NULL since we can, in some
+ * cases, let OF figure out a default partition.
+ */
+ DEBUG_F( "Using OF defaults.. (found = %p)\n", found );
+ file->fs = fs_open( file, dev_name, found, file_name );
-bail:
- if (parts)
- partitions_free(parts);
+done:
+ if (parts)
+ partitions_free(parts);
- return fserrorno;
+ return fserrorno;
}
static int
const char* dev_name,
const char* file_name)
{
- file->fs = fs_of_netboot;
- return fs_of_netboot->open(file, dev_name, NULL, file_name);
+ file->fs = fs_of_netboot;
+ return fs_of_netboot->open(file, dev_name, NULL, file_name);
}
static int
unsigned int size,
void* buffer)
{
- prom_printf("WARNING ! default_read called !\n");
- return FILE_ERR_EOF;
+ prom_printf("WARNING ! default_read called !\n");
+ return FILE_ERR_EOF;
}
static int
default_seek( struct boot_file_t* file,
unsigned int newpos)
{
- prom_printf("WARNING ! default_seek called !\n");
- return FILE_ERR_EOF;
+ prom_printf("WARNING ! default_seek called !\n");
+ return FILE_ERR_EOF;
}
static int
default_close( struct boot_file_t* file)
{
- prom_printf("WARNING ! default_close called !\n");
- return FILE_ERR_OK;
+ prom_printf("WARNING ! default_close called !\n");
+ return FILE_ERR_OK;
}
static struct fs_t fs_default =
{
- "defaults",
- NULL,
- default_read,
- default_seek,
- default_close
+ "defaults",
+ NULL,
+ default_read,
+ default_seek,
+ default_close
};
int open_file(const struct boot_fspec_t* spec, struct boot_file_t* file)
{
- int result;
+ int result;
- memset(file, 0, sizeof(struct boot_file_t*));
- file->fs = &fs_default;
+ memset(file, 0, sizeof(struct boot_file_t*));
+ file->fs = &fs_default;
- DEBUG_F("dev_path = %s\nfile_name = %s\npartition = %d\n",
- spec->dev, spec->file, spec->part);
+ DEBUG_F("dev_path = %s\nfile_name = %s\npartition = %d\n",
+ spec->dev, spec->file, spec->part);
- result = prom_get_devtype(spec->dev);
- if (result > 0)
- file->device_kind = result;
- else
- return result;
+ result = prom_get_devtype(spec->dev);
+ if (result > 0)
+ file->device_kind = result;
+ else
+ return result;
- switch(file->device_kind) {
- case FILE_DEVICE_BLOCK:
- DEBUG_F("device is a block device\n");
- return file_block_open(file, spec->dev, spec->file, spec->part);
- case FILE_DEVICE_NET:
- DEBUG_F("device is a network device\n");
- return file_net_open(file, spec->dev, spec->file);
- }
- return 0;
+ switch(file->device_kind) {
+ case FILE_DEVICE_BLOCK:
+ DEBUG_F("device is a block device\n");
+ return file_block_open(file, spec->dev, spec->file, spec->part);
+ case FILE_DEVICE_NET:
+ DEBUG_F("device is a network device\n");
+ return file_net_open(file, spec->dev, spec->file);
+ }
+ return 0;
}
/*
* Local variables:
- * c-file-style: "K&R"
+ * c-file-style: "k&r"
* c-basic-offset: 5
* End:
*/
projects / yaboot.git / blobdiff