diff options
Diffstat (limited to 'linux/linux-mtx-1-2.4.24/15-mtd-proc-partition-rw.diff')
| -rw-r--r-- | linux/linux-mtx-1-2.4.24/15-mtd-proc-partition-rw.diff | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/linux/linux-mtx-1-2.4.24/15-mtd-proc-partition-rw.diff b/linux/linux-mtx-1-2.4.24/15-mtd-proc-partition-rw.diff index e69de29bb2..54ba5fff98 100644 --- a/linux/linux-mtx-1-2.4.24/15-mtd-proc-partition-rw.diff +++ b/linux/linux-mtx-1-2.4.24/15-mtd-proc-partition-rw.diff @@ -0,0 +1,173 @@ +diff -Nurb linux/drivers/mtd/mtdcore.c linux-mtd-rw/drivers/mtd/mtdcore.c +--- linux/drivers/mtd/mtdcore.c 2004-11-18 13:16:00.000000000 +0100 ++++ linux-mtd-rw/drivers/mtd/mtdcore.c 2004-11-18 15:27:13.130036616 +0100 +@@ -25,6 +25,10 @@ + + #include <linux/mtd/mtd.h> + ++/* this symbol is exported by the procfs. */ ++extern struct proc_dir_entry *proc_sys_root; ++ ++ + /* These are exported solely for the purpose of mtd_blkdevs.c. You + should not use them for _anything_ else */ + DECLARE_MUTEX(mtd_table_mutex); +@@ -336,8 +340,83 @@ + + #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0) + static struct proc_dir_entry *proc_mtd; ++ ++static struct proc_dir_entry *proc_sys_mtd; ++static struct proc_dir_entry *proc_sys_mtd_partition[MAX_MTD_DEVICES]; ++static struct proc_dir_entry *proc_sys_mtd_partition_rw[MAX_MTD_DEVICES]; + #endif + ++/*===================================0 ++ * mtdproc_read_partition_access ++ */ ++static int mtdproc_read_partition_access ( char *page, char **start, off_t off,int count, ++ int *eof, void *data ++ ) ++{ ++ int partid = (unsigned int)data; ++ int len = 0; ++ ++ // NO RETURN FROM HERE UNTIL "up(&mtd_table_mutex)". ++ down(&mtd_table_mutex); ++ ++ if (partid < MAX_MTD_DEVICES) ++ { ++ struct mtd_info *this = mtd_table[partid]; ++ if (this) ++ { ++ page[len] = (this->flags & MTD_WRITEABLE) ? '1' : '0'; ++ len++; ++ } ++ } ++ ++ up(&mtd_table_mutex); ++ ++ if (off >= len) ++ return 0; ++ *start = page + off; ++ return ((count < len-off) ? count : len-off); ++} ++ ++ ++static int mtdproc_write_partition_access (struct file *file, const char *buffer, ++ unsigned long count, void *data) ++{ ++ int partid = (unsigned int)data; ++ int len = 0; ++ ++ // NO RETURN FROM HERE UNTIL "up(&mtd_table_mutex)". ++ down(&mtd_table_mutex); ++ ++ if (partid < MAX_MTD_DEVICES) ++ { ++ struct mtd_info *this = mtd_table[partid]; ++ if (this && count > 0) ++ { ++ switch (*buffer) ++ { ++ case '0': ++ this->flags &= ~(this->master_flags & MTD_WRITEABLE); ++ break; ++ ++ case '1': ++ this->flags |= ~(this->master_flags & MTD_WRITEABLE); ++ break; ++ ++ default: ++ break; ++ } ++ } ++ } ++ ++ up(&mtd_table_mutex); ++ ++ return count; ++} ++ ++ ++ ++ ++ + static inline int mtd_proc_info (char *buf, int i) + { + struct mtd_info *this = mtd_table[i]; +@@ -349,6 +428,7 @@ + this->erasesize, this->name); + } + ++ + static int mtd_read_proc ( char *page, char **start, off_t off,int count + #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0) + ,int *eof, void *data_unused +@@ -404,12 +484,31 @@ + /*====================================================================*/ + /* Init code */ + ++ + int __init init_mtd(void) + { + #ifdef CONFIG_PROC_FS + #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0) ++ int i; ++ + if ((proc_mtd = create_proc_entry( "mtd", 0, 0 ))) + proc_mtd->read_proc = mtd_read_proc; ++ ++ proc_sys_mtd = proc_mkdir("mtd", proc_sys_root); ++ for (i=0; i<MAX_MTD_DEVICES; i++) ++ { ++ char partname[10]; ++ sprintf (partname, "%d", i); ++ ++ proc_sys_mtd_partition[i] = proc_mkdir(partname, proc_sys_mtd); ++ proc_sys_mtd_partition_rw[i] = create_proc_entry ("rw", S_IFREG | S_IRUGO, proc_sys_mtd_partition[i]); ++ if (proc_sys_mtd_partition_rw[i]) ++ { ++ proc_sys_mtd_partition_rw[i]->read_proc = mtdproc_read_partition_access; ++ proc_sys_mtd_partition_rw[i]->write_proc = mtdproc_write_partition_access; ++ proc_sys_mtd_partition_rw[i]->data = (void *)i; ++ } ++ } + #else + proc_register_dynamic(&proc_root,&mtd_proc_entry); + #endif +@@ -425,6 +524,8 @@ + return 0; + } + ++ ++ + static void __exit cleanup_mtd(void) + { + #ifdef CONFIG_PM +diff -Nurb linux/drivers/mtd/mtdpart.c linux-mtd-rw/drivers/mtd/mtdpart.c +--- linux/drivers/mtd/mtdpart.c 2004-11-18 13:16:00.000000000 +0100 ++++ linux-mtd-rw/drivers/mtd/mtdpart.c 2004-11-18 15:27:13.131036464 +0100 +@@ -341,6 +341,9 @@ + /* set up the MTD object for this partition */ + slave->mtd.type = master->type; + slave->mtd.flags = master->flags & ~parts[i].mask_flags; ++ slave->mtd.master_flags = master->flags; ++ slave->mtd.mask_flags = parts[i].mask_flags; ++ + slave->mtd.size = parts[i].size; + slave->mtd.oobblock = master->oobblock; + slave->mtd.oobsize = master->oobsize; +diff -Nurb linux/include/linux/mtd/mtd.h linux-mtd-rw/include/linux/mtd/mtd.h +--- linux/include/linux/mtd/mtd.h 2004-11-18 13:16:31.000000000 +0100 ++++ linux-mtd-rw/include/linux/mtd/mtd.h 2004-11-18 15:27:13.000000000 +0100 +@@ -232,6 +232,9 @@ + + struct module *owner; + int usecount; ++ ++ u_int32_t master_flags; ++ u_int32_t mask_flags; + }; + + |