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Don't overflow devoptabs, etc.

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This commit is contained in:
TuxSH 2018-05-17 01:53:32 +02:00
parent 468a063c03
commit 9309b0bed5
5 changed files with 203 additions and 60 deletions
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113
fusee/fusee-secondary/src/fs_dev.c
View file

@ -10,6 +10,10 @@
#include "lib/fatfs/ff.h"
#if FF_VOLUMES != 10
#error "FatFs misconfigured, expected FF_VOLUMES == 10"
#endif
#include "fs_dev.h"
/* Quite a bit of code comes from https://github.com/switchbrew/libnx/blob/master/nx/source/runtime/devices/fs_dev.c */
@ -67,15 +71,15 @@ static devoptab_t g_fsdev_devoptab = {
.rmdir_r = fsdev_rmdir,
};
typedef struct fsdev_fsdevice_t {
typedef struct fsdev_device_t {
devoptab_t devoptab;
device_partition_t devpart;
FATFS fatfs;
char name[32+1];
bool setup;
} fsdev_fsdevice_t;
bool setup, registered;
} fsdev_device_t;
static fsdev_fsdevice_t g_fsdev_devices[FF_VOLUMES] = { 0 };
static fsdev_device_t g_fsdev_devices[FF_VOLUMES] = { 0 };
/* Required by ff.c */
/* FF_VOLUMES = 10 */
@ -86,10 +90,26 @@ const char *VolumeStr[FF_VOLUMES] = { FKNAM, FKNAM, FKNAM, FKNAM, FKNAM, FKNAM,
/* For diskio.c code */
device_partition_t *g_volume_to_devparts[FF_VOLUMES] = { NULL };
static fsdev_device_t *fsdev_find_device(const char *name) {
for (size_t i = 0; i < FF_VOLUMES; i++) {
if (g_fsdev_devices[i].setup && strcmp(g_fsdev_devices[i].name, name) == 0) {
return &g_fsdev_devices[i];
}
}
return NULL;
}
int fsdev_mount_device(const char *name, const device_partition_t *devpart, bool initialize_immediately) {
fsdev_fsdevice_t *device = NULL;
fsdev_device_t *device = fsdev_find_device(name);
FRESULT rc;
char drname[40];
if (device != NULL) {
errno = EEXIST; /* Device already exists */
return -1;
}
strcpy(drname, name);
strcat(drname, ":");
@ -102,10 +122,6 @@ int fsdev_mount_device(const char *name, const device_partition_t *devpart, bool
return -1;
}
if (FindDevice(drname) != -1) {
errno = EEXIST; /* Device already exists */
return -1;
}
/* Find an unused slot. */
for(size_t i = 0; i < FF_VOLUMES; i++) {
if (!g_fsdev_devices[i].setup) {
@ -118,6 +134,7 @@ int fsdev_mount_device(const char *name, const device_partition_t *devpart, bool
return -1;
}
memset(device, 0, sizeof(fsdev_device_t));
strcpy(device->name, name);
device->devoptab = g_fsdev_devoptab;
@ -132,17 +149,60 @@ int fsdev_mount_device(const char *name, const device_partition_t *devpart, bool
rc = f_mount(&device->fatfs, drname, initialize_immediately ? 1 : 0);
if (rc != FR_OK) {
g_volume_to_devparts[device - g_fsdev_devices] = NULL;
VolumeStr[device - g_fsdev_devices] = FKNAM;
return fsdev_convert_rc(NULL, rc);
}
device->setup = true;
device->registered = false;
return 0;
}
int fsdev_register_device(const char *name) {
fsdev_device_t *device = fsdev_find_device(name);
if (device == NULL) {
errno = ENOENT;
return -1;
}
if (device->registered) {
/* Do nothing if the device is already registered. */
return 0;
}
if (AddDevice(&device->devoptab) == -1) {
f_unmount(drname);
g_volume_to_devparts[device - g_fsdev_devices] = NULL;
VolumeStr[device - g_fsdev_devices] = FKNAM;
errno = ENOMEM;
return -1;
} else {
device->setup = true;
device->registered = true;
return 0;
}
}
int fsdev_unregister_device(const char *name) {
fsdev_device_t *device = fsdev_find_device(name);
char drname[40];
if (device == NULL) {
errno = ENOENT;
return -1;
}
if (!device->registered) {
/* Do nothing if the device is not registered. */
return 0;
}
strcpy(drname, name);
strcat(drname, ":");
if (RemoveDevice(drname) == -1) {
errno = ENOENT;
return -1;
} else {
device->registered = false;
return 0;
}
}
@ -156,14 +216,12 @@ int fsdev_set_default_device(const char *name) {
strcat(drname, ":");
devid = FindDevice(drname);
if (devid == -1) {
if (devid == -1 || fsdev_find_device(name) == NULL) {
errno = ENOENT;
return -1;
}
#if FF_VOLUMES >= 2
ret = fsdev_convert_rc(NULL, f_chdrive(drname));
#endif
if (ret == 0) {
setDefaultDevice(devid);
}
@ -174,27 +232,28 @@ int fsdev_set_default_device(const char *name) {
int fsdev_unmount_device(const char *name) {
int ret;
char drname[40];
int devid;
fsdev_device_t *device = fsdev_find_device(name);
strcpy(drname, name);
strcat(drname, ":");
devid = FindDevice(drname);
if (devid == -1) {
if (device == NULL) {
errno = ENOENT;
return -1;
}
ret = fsdev_unregister_device(name);
if (ret == -1) {
return -1;
}
strcpy(drname, name);
strcat(drname, ":");
ret = fsdev_convert_rc(NULL, f_unmount(drname));
if (ret == 0) {
fsdev_fsdevice_t *device = (fsdev_fsdevice_t *)(GetDeviceOpTab(name)->deviceData);
RemoveDevice(drname);
VolumeStr[device - g_fsdev_devices] = FKNAM;
g_volume_to_devparts[device - g_fsdev_devices] = NULL;
device->devpart.finalizer(&device->devpart);
memset(device, 0, sizeof(fsdev_fsdevice_t));
memset(device, 0, sizeof(fsdev_device_t));
}
return ret;
@ -202,7 +261,7 @@ int fsdev_unmount_device(const char *name) {
int fsdev_unmount_all(void) {
for (size_t i = 0; i < FF_VOLUMES; i++) {
int ret = fsdev_unmount_device(VolumeStr[i]);
int ret = fsdev_unmount_device(g_fsdev_devices[i].name);
if (ret != 0) {
return ret;
}

7
fusee/fusee-secondary/src/fs_dev.h
View file

@ -7,8 +7,11 @@
#include "device_partition.h"
int fsdev_mount_device(const char *name, const device_partition_t *devpart, bool initialize_immediately);
int fsdev_set_default_device(const char *name);
int fsdev_unmount_device(const char *name);
int fsdev_register_device(const char *name);
int fsdev_set_default_device(const char *name); /* must be registered. */
int fsdev_unregister_device(const char *name);
int fsdev_unmount_device(const char *name); /* also unregisters. */
int fsdev_unmount_all(void);

85
fusee/fusee-secondary/src/raw_dev.c
View file

@ -25,7 +25,7 @@ typedef struct rawdev_device_t {
device_partition_t devpart;
char name[32+1];
char root_path[34+1];
bool setup;
bool setup, registered;
} rawdev_device_t;
typedef struct rawdev_file_t {
@ -49,6 +49,16 @@ static devoptab_t g_rawdev_devoptab = {
.deviceData = NULL,
};
static rawdev_device_t *rawdev_find_device(const char *name) {
for (size_t i = 0; i < RAWDEV_MAX_DEVICES; i++) {
if (g_rawdev_devices[i].setup && strcmp(g_rawdev_devices[i].name, name) == 0) {
return &g_rawdev_devices[i];
}
}
return NULL;
}
int rawdev_mount_device(const char *name, const device_partition_t *devpart, bool initialize_immediately) {
rawdev_device_t *device = NULL;
char drname[40];
@ -64,7 +74,7 @@ int rawdev_mount_device(const char *name, const device_partition_t *devpart, boo
errno = ENAMETOOLONG;
return -1;
}
if (FindDevice(drname) != -1) {
if (rawdev_find_device(name) != NULL) {
errno = EEXIST; /* Device already exists */
return -1;
}
@ -105,32 +115,73 @@ int rawdev_mount_device(const char *name, const device_partition_t *devpart, boo
return -1;
}
device->setup = true;
device->registered = false;
return 0;
}
int rawdev_register_device(const char *name) {
rawdev_device_t *device = rawdev_find_device(name);
if (device == NULL) {
errno = ENOENT;
return -1;
}
if (device->registered) {
/* Do nothing if the device is already registered. */
return 0;
}
if (AddDevice(&device->devoptab) == -1) {
errno = ENOMEM;
return -1;
} else {
device->setup = true;
device->registered = true;
return 0;
}
}
int rawdev_unregister_device(const char *name) {
rawdev_device_t *device = rawdev_find_device(name);
char drname[40];
if (device == NULL) {
errno = ENOENT;
return -1;
}
if (!device->registered) {
/* Do nothing if the device is not registered. */
return 0;
}
strcpy(drname, name);
strcat(drname, ":");
if (RemoveDevice(drname) == -1) {
errno = ENOENT;
return -1;
} else {
device->registered = false;
return 0;
}
}
int rawdev_unmount_device(const char *name) {
char drname[40];
int devid;
rawdev_device_t *device;
int rc;
rawdev_device_t *device = rawdev_find_device(name);
strcpy(drname, name);
strcat(drname, ":");
devid = FindDevice(drname);
if (devid == -1) {
if (device == NULL) {
errno = ENOENT;
return -1;
}
device = (rawdev_device_t *)(GetDeviceOpTab(name)->deviceData);
RemoveDevice(drname);
rc = rawdev_unregister_device(name);
if (rc == -1) {
return -1;
}
free(device->tmp_sector);
device->devpart.finalizer(&device->devpart);
memset(device, 0, sizeof(rawdev_device_t));
@ -140,8 +191,10 @@ int rawdev_unmount_device(const char *name) {
int rawdev_unmount_all(void) {
for (size_t i = 0; i < RAWDEV_MAX_DEVICES; i++) {
RemoveDevice(g_rawdev_devices[i].root_path);
memset(&g_rawdev_devices[i], 0, sizeof(rawdev_device_t));
int rc = rawdev_unmount_device(g_rawdev_devices[i].name);
if (rc != 0) {
return rc;
}
}
return 0;

4
fusee/fusee-secondary/src/raw_dev.h
View file

@ -9,8 +9,10 @@
#define RAWDEV_MAX_DEVICES 16
int rawdev_mount_device(const char *name, const device_partition_t *device, bool mount_immediately);
int rawdev_register_device(const char *name);
int rawdev_unmount_device(const char *name);
int rawdev_unregister_device(const char *name);
int rawdev_unmount_device(const char *name); /* also unregisters. */
int rawdev_unmount_all(void);
#endif

54
fusee/fusee-secondary/src/switch_fs.c
View file

@ -138,18 +138,19 @@ static int switchfs_mount_partition_gpt_callback(const efi_entry_t *entry, void
const char *mount_point;
bool is_fat;
bool is_encrypted;
bool register_immediately;
} known_partitions[] = {
{"PRODINFO", "prodinfo", false, true},
{"PRODINFOF", "prodinfof", true, true},
{"BCPKG2-1-Normal-Main", "bcpkg21", false, false},
{"BCPKG2-2-Normal-Sub", "bcpkg22", false, false},
{"BCPKG2-3-SafeMode-Main", "bcpkg23", false, false},
{"BCPKG2-4-SafeMode-Sub", "bcpkg24", false, false},
{"BCPKG2-5-Repair-Main", "bcpkg25", false, false},
{"BCPKG2-6-Repair-Sub", "bcpkg26", false, false},
{"SAFE", "safe", true, true},
{"SYSTEM", "system", true, true},
{"USER", "user", true, true},
{"PRODINFO", "prodinfo", false, true, false},
{"PRODINFOF", "prodinfof", true, true, false},
{"BCPKG2-1-Normal-Main", "bcpkg21", false, false, true},
{"BCPKG2-2-Normal-Sub", "bcpkg22", false, false, false},
{"BCPKG2-3-SafeMode-Main", "bcpkg23", false, false, false},
{"BCPKG2-4-SafeMode-Sub", "bcpkg24", false, false, false},
{"BCPKG2-5-Repair-Main", "bcpkg25", false, false, false},
{"BCPKG2-6-Repair-Sub", "bcpkg26", false, false, false},
{"SAFE", "safe", true, true, false},
{"SYSTEM", "system", true, true, false},
{"USER", "user", true, true, false},
};
/* Convert the partition name to ASCII, for comparison. */
@ -174,15 +175,27 @@ static int switchfs_mount_partition_gpt_callback(const efi_entry_t *entry, void
}
if (known_partitions[i].is_fat) {
rc = fsdev_mount_device(known_partitions[i].partition_name, &devpart, false);
rc = fsdev_mount_device(known_partitions[i].mount_point, &devpart, false);
if (rc == -1) {
return -1;
}
if (known_partitions[i].register_immediately) {
rc = fsdev_register_device(known_partitions[i].mount_point);
if (rc == -1) {
return -1;
}
}
} else {
rc = rawdev_mount_device(known_partitions[i].partition_name, &devpart, false);
rc = rawdev_mount_device(known_partitions[i].mount_point, &devpart, false);
if (rc == -1) {
return -1;
}
if (known_partitions[i].register_immediately) {
rc = rawdev_register_device(known_partitions[i].mount_point);
if (rc == -1) {
return -1;
}
}
}
}
}
@ -204,6 +217,10 @@ int switchfs_mount_all(void) {
if (rc == -1) {
return -1;
}
rc = fsdev_register_device("sdmc");
if (rc == -1) {
return -1;
}
/* Boot0. */
model = g_mmc_devpart_template;
@ -214,6 +231,10 @@ int switchfs_mount_all(void) {
if (rc == -1) {
return -1;
}
rc = rawdev_register_device("boot0");
if (rc == -1) {
return -1;
}
/* Boot1. */
model = g_mmc_devpart_template;
@ -224,6 +245,7 @@ int switchfs_mount_all(void) {
if (rc == -1) {
return -1;
}
/* Don't register boot1 for now. */
/* Raw NAND (excluding boot partitions), and its partitions. */
model = g_mmc_devpart_template;
@ -235,10 +257,14 @@ int switchfs_mount_all(void) {
if (rc == -1) {
return -1;
}
rc = rawdev_register_device("rawnand");
if (rc == -1) {
return -1;
}
rawnand = fopen("rawnand:/", "rb");
rc = gpt_iterate_through_entries(rawnand, model.sector_size, switchfs_mount_partition_gpt_callback, &model);
fclose(rawnand);
if (rc != 0) {
if (rc == 0) {
rc = fsdev_set_default_device("sdmc");
}
return rc;