fs: replace broken dev_protect with protect_file function ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fs: write: fix writing on devices ...

We can't truncate device files. Make sure that if we want to
write beyond the device that the bytes that still fit into the
device get written.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

get rid of device ids ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Get rid of DEVICE_TYPE_FS usage ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

introduce cdev ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fs: fix compiler warning ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

implement memmap for mem driver ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

lseek: return -1 for errors and check for that return value ...

We cannot check for < 0 in lseek, otherwise we get problems with files > 0x7fffffff

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

[fs]: set errno correctly for ioctl()

- introduce ioctl call ...

- pass open/close/lseek through to drivers

add missing null pointer check in unlink()

[general] Fixed crash in fs.h, when called with fsdrv.create == NULL ...

When a nor0 devices has no partitions assigned, then a call to
open() to create a file will jump with a NULL fct ptr.

Much more cheching code is missing and pointers to function are
jumped without any NULL ptr check. This must be fixed as well later.

Signed-off-by: Carsten Schlote <c.schlote@konzeptpark.de>

[sparse] declare functions static, use NULL as NULL pointer ...

this fixes:
fs/fs.c:210:6: warning: symbol 'files' was not declared. Should it be static?
fs/fs.c:212:6: warning: symbol 'get_file' was not declared. Should it be static?
fs/fs.c:227:6: warning: symbol 'put_file' was not declared. Should it be static?
fs/fs.c:248:5: warning: symbol 'dir_is_empty' was not declared. Should it be static?
fs/fs.c:613:41: warning: Using plain integer as NULL pointer

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

- Implement tree structure for devices ...

- Use device tree structure to implement partitions
- Let devinfo print a nice tree
- Introduce 'fixed' partitions which are not removable
- Fix mount: It was not possible to mount on a relative path.

use S_ISDIR macro in open()

export symbols

change files and dirs to rwxrwxrwx

export functions

pass file size from read_file

handle NULL Pointers in readdir/closedir properly

- change function declarations for better standard conformity: ...

int open(const char *pathname, int flags);
-> int open(const char *pathname, int flags, ...);
   int mkdir(const char *pathname);
-> int mkdir(const char *pathname, mode_t mode);

implement flash protection

implement memmap(). ...

With this function we can get a pointer to directly memory mapped
devices like nor flash or RAM. Useful for bootm where we save one
memcopy when the image is mappable

svn_rev_706 ...

add file headers

svn_rev_653 ...

restructure tree, add reginfo command

svn_rev_633 ...

add some comments, minor cleanups

svn_rev_605 ...

make read_file global

svn_rev_452 ...

add erase function

svn_rev_420 ...

- do more POSIX:
  - use DIR instead of struct dirent
  - use (struct dirent)->d_name instead of (struct dirent)->name
- switch to a new layout for U_BOOT_CMD:
  - use C99 initializers to be able to add more fields to the
    command struct
  - add aliases for commands (needed mainly for help -> ? and test -> [
  - This is not done for all commands yet, but the compiler will tell you ;)

svn_rev_406 ...

let normalise path allocate the string instead of changing the original one