[U-Boot] [PATCH v6 6/6] sandbox: interface changes to accomodate files greater than 2GB
Suriyan Ramasami
suriyan.r at gmail.com
Tue Nov 4 03:50:02 CET 2014
Change the interface for the sandbox functions to take in an extra
parameter of type "loff_t *" to return the size. The return values of
these funtions now serve as an indicator of error conditions alone.
Signed-off-by: Suriyan Ramasami <suriyan.r at gmail.com>
---
Changes in v6:
* Simon - Split this into a separate patch
Changes in v5: None
arch/sandbox/cpu/os.c | 13 +++++----
arch/sandbox/cpu/state.c | 8 +++---
common/board_f.c | 8 +++---
fs/sandbox/sandboxfs.c | 73 ++++++++++++++++++++++++++++++++----------------
include/os.h | 5 ++--
include/sandboxfs.h | 14 ++++++----
6 files changed, 76 insertions(+), 45 deletions(-)
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c
index 1c4aa3f..31c9344 100644
--- a/arch/sandbox/cpu/os.c
+++ b/arch/sandbox/cpu/os.c
@@ -385,7 +385,7 @@ const char *os_dirent_get_typename(enum os_dirent_t type)
return os_dirent_typename[OS_FILET_UNKNOWN];
}
-ssize_t os_get_filesize(const char *fname)
+int os_get_filesize(const char *fname, loff_t *size)
{
struct stat buf;
int ret;
@@ -393,7 +393,8 @@ ssize_t os_get_filesize(const char *fname)
ret = stat(fname, &buf);
if (ret)
return ret;
- return buf.st_size;
+ *size = buf.st_size;
+ return 0;
}
void os_putc(int ch)
@@ -427,11 +428,11 @@ int os_read_ram_buf(const char *fname)
{
struct sandbox_state *state = state_get_current();
int fd, ret;
- int size;
+ loff_t size;
- size = os_get_filesize(fname);
- if (size < 0)
- return -ENOENT;
+ ret = os_get_filesize(fname, &size);
+ if (ret < 0)
+ return ret;
if (size != state->ram_size)
return -ENOSPC;
fd = open(fname, O_RDONLY);
diff --git a/arch/sandbox/cpu/state.c b/arch/sandbox/cpu/state.c
index 59adad6..ba73b7e 100644
--- a/arch/sandbox/cpu/state.c
+++ b/arch/sandbox/cpu/state.c
@@ -49,14 +49,14 @@ static int state_ensure_space(int extra_size)
static int state_read_file(struct sandbox_state *state, const char *fname)
{
- int size;
+ loff_t size;
int ret;
int fd;
- size = os_get_filesize(fname);
- if (size < 0) {
+ ret = os_get_filesize(fname, &size);
+ if (ret < 0) {
printf("Cannot find sandbox state file '%s'\n", fname);
- return -ENOENT;
+ return ret;
}
state->state_fdt = os_malloc(size);
if (!state->state_fdt) {
diff --git a/common/board_f.c b/common/board_f.c
index b5bebc9..844cc19 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -285,7 +285,7 @@ static int read_fdt_from_file(void)
struct sandbox_state *state = state_get_current();
const char *fname = state->fdt_fname;
void *blob;
- ssize_t size;
+ loff_t size;
int err;
int fd;
@@ -298,10 +298,10 @@ static int read_fdt_from_file(void)
return -EINVAL;
}
- size = os_get_filesize(fname);
- if (size < 0) {
+ err = os_get_filesize(fname, &size);
+ if (err < 0) {
printf("Failed to file FDT file '%s'\n", fname);
- return -ENOENT;
+ return err;
}
fd = os_open(fname, OS_O_RDONLY);
if (fd < 0) {
diff --git a/fs/sandbox/sandboxfs.c b/fs/sandbox/sandboxfs.c
index ba6402c..9ecd2f7 100644
--- a/fs/sandbox/sandboxfs.c
+++ b/fs/sandbox/sandboxfs.c
@@ -13,10 +13,10 @@ int sandbox_fs_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info)
return 0;
}
-long sandbox_fs_read_at(const char *filename, unsigned long pos,
- void *buffer, unsigned long maxsize)
+int sandbox_fs_read_at(const char *filename, loff_t pos, void *buffer,
+ loff_t maxsize, loff_t *actread)
{
- ssize_t size;
+ loff_t size;
int fd, ret;
fd = os_open(filename, OS_O_RDONLY);
@@ -27,16 +27,31 @@ long sandbox_fs_read_at(const char *filename, unsigned long pos,
os_close(fd);
return ret;
}
- if (!maxsize)
- maxsize = os_get_filesize(filename);
+ if (!maxsize) {
+ ret = os_get_filesize(filename, &size);
+ if (ret) {
+ os_close(fd);
+ return ret;
+ }
+
+ maxsize = size;
+ }
+
size = os_read(fd, buffer, maxsize);
os_close(fd);
- return size;
+ if (size < 0) {
+ ret = -1;
+ } else {
+ ret = 0;
+ *actread = size;
+ }
+
+ return ret;
}
-long sandbox_fs_write_at(const char *filename, unsigned long pos,
- void *buffer, unsigned long towrite)
+int sandbox_fs_write_at(const char *filename, loff_t pos, void *buffer,
+ loff_t towrite, loff_t *actwrite)
{
ssize_t size;
int fd, ret;
@@ -52,7 +67,14 @@ long sandbox_fs_write_at(const char *filename, unsigned long pos,
size = os_write(fd, buffer, towrite);
os_close(fd);
- return size;
+ if (size == -1) {
+ ret = -1;
+ } else {
+ ret = 0;
+ *actwrite = size;
+ }
+
+ return ret;
}
int sandbox_fs_ls(const char *dirname)
@@ -74,43 +96,46 @@ int sandbox_fs_ls(const char *dirname)
int sandbox_fs_exists(const char *filename)
{
- ssize_t sz;
+ loff_t sz;
+ int ret;
- sz = os_get_filesize(filename);
- return sz >= 0;
+ ret = os_get_filesize(filename, &sz);
+ return ret == 0;
}
-int sandbox_fs_size(const char *filename)
+int sandbox_fs_size(const char *filename, loff_t *size)
{
- return os_get_filesize(filename);
+ return os_get_filesize(filename, size);
}
void sandbox_fs_close(void)
{
}
-int fs_read_sandbox(const char *filename, void *buf, int offset, int len)
+int fs_read_sandbox(const char *filename, void *buf, loff_t offset, loff_t len,
+ loff_t *actread)
{
- int len_read;
+ int ret;
- len_read = sandbox_fs_read_at(filename, offset, buf, len);
- if (len_read == -1) {
+ ret = sandbox_fs_read_at(filename, offset, buf, len, actread);
+ if (ret) {
printf("** Unable to read file %s **\n", filename);
return -1;
}
- return len_read;
+ return 0;
}
-int fs_write_sandbox(const char *filename, void *buf, int offset, int len)
+int fs_write_sandbox(const char *filename, void *buf, loff_t offset,
+ loff_t len, loff_t *actwrite)
{
- int len_written;
+ int ret;
- len_written = sandbox_fs_write_at(filename, offset, buf, len);
- if (len_written == -1) {
+ ret = sandbox_fs_write_at(filename, offset, buf, len, actwrite);
+ if (ret == -1) {
printf("** Unable to write file %s **\n", filename);
return -1;
}
- return len_written;
+ return 0;
}
diff --git a/include/os.h b/include/os.h
index 0230a7f..e3645e0 100644
--- a/include/os.h
+++ b/include/os.h
@@ -217,9 +217,10 @@ const char *os_dirent_get_typename(enum os_dirent_t type);
* Get the size of a file
*
* @param fname Filename to check
- * @return size of file, or -1 if an error ocurred
+ * @param size size of file is returned if no error
+ * @return 0 on success or -1 if an error ocurred
*/
-ssize_t os_get_filesize(const char *fname);
+int os_get_filesize(const char *fname, loff_t *size);
/**
* Write a character to the controlling OS terminal
diff --git a/include/sandboxfs.h b/include/sandboxfs.h
index e7c3262..4c7745d 100644
--- a/include/sandboxfs.h
+++ b/include/sandboxfs.h
@@ -20,14 +20,18 @@
int sandbox_fs_set_blk_dev(block_dev_desc_t *rbdd, disk_partition_t *info);
-long sandbox_fs_read_at(const char *filename, unsigned long pos,
- void *buffer, unsigned long maxsize);
+int sandbox_fs_read_at(const char *filename, loff_t pos, void *buffer,
+ loff_t maxsize, loff_t *actread);
+int sandbox_fs_write_at(const char *filename, loff_t pos, void *buffer,
+ loff_t maxsize, loff_t *actwrite);
void sandbox_fs_close(void);
int sandbox_fs_ls(const char *dirname);
int sandbox_fs_exists(const char *filename);
-int sandbox_fs_size(const char *filename);
-int fs_read_sandbox(const char *filename, void *buf, int offset, int len);
-int fs_write_sandbox(const char *filename, void *buf, int offset, int len);
+int sandbox_fs_size(const char *filename, loff_t *size);
+int fs_read_sandbox(const char *filename, void *buf, loff_t offset, loff_t len,
+ loff_t *actread);
+int fs_write_sandbox(const char *filename, void *buf, loff_t offset,
+ loff_t len, loff_t *actwrite);
#endif
--
1.9.1
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