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87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
#ifndef __RAMDISK_H
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#define __RAMDISK_H
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/*
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ramdiskCreate initialize a dynamic RAM-disk.
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return: Handle for ramdiskMount
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*/
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void* ramdiskCreate();
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/**************************************************
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* ramdiskDelete
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*
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* destroy all datas
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* if the ramdisk is allready mounted forces ramdiskUnmount
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* IN: a Handle was created witch ramdiskCreate();
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**************************************************/
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void ramdiskDelete(void* Handle);
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/**************************************************
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* ramdiskMount
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*
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* mounts a ramdisk
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* IN: mountpoint e.g. "RAM" or "MEM:"
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* handle is a Handle was created ramdiskCreate()
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* or NULL for auto-create
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* OUT: 0 = Error / !0 = OK
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**************************************************/
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int ramdiskMount(const char *mountpoint, void *handle);
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/**************************************************
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* ramdiskUnmount
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*
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* unmounts a ramdisk
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* IN: mountpoint e.g "RAM" or "MEM:"
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**************************************************/
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void ramdiskUnmount(const char *mountpoint);
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/*
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NOTE:
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if the ramdisk not explizit created with ramdiskCreate (e.g ramdiskMount("RAMDISK:", NULL))
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the ramdisk is implizit created. When unmount this "auto-created" ramdisk the ramdisk automitic deleted
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but if the ramdisk explizit created (with ramdiskCreate),
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then we can remount the filesystem without lost all datas.
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Example1:
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=========
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void *ram = ramdiskCreate(); // create ramdisk
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ramdiskMount("RAM", ram); // mount the ramdisk
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...
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fopen("RAM:/file", ...);
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...
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ramdiskMount("MEM", ram); // remount as MEM: (without lost of data)
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...
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fopen("RAM:/file", ...);
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...
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ramdiskUnmount("MEM"); // unmount
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...
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ramdiskMount("RAM", ram); // remount as RAM: (without lost of data)
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...
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ramdiskDelete(ram); // unmount and delete
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Example2:
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=========
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ramdiskMount("RAM", NULL); // create and mount the ramdisk
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...
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fopen("RAM:/file", ...);
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...
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ramdiskUnmount("RAM"); // unmount and delete
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*/
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#ifdef __cplusplus
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}
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#endif
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#endif /*__RAMDISK_H*/
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