36 lines
895 B
C
36 lines
895 B
C
#include <kernel/fs/smemfs.h>
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#include <kernel/util/atomic.h>
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/* smemfs_find_next_sibling() - Find the next file from the same parent (sync) */
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void *smemfs_USB2_find_next_sibling(void *inode)
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{
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extern struct smemfs_USB2_superblock smemfs_USB2_superblock;
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void *sibling_inode;
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uint16_t folder_id;
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// Check error.
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if (inode == NULL)
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return (NULL);
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// Start atomic operation
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atomic_start();
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// Check inode validity (and root)
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if (inode == smemfs_USB2_superblock.sector_table ||
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((struct casio_smem_header_s *)inode)->info != CASIO_SMEM_HEADER_INFO_EXIST)
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{
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atomic_stop();
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return (NULL);
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}
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// Get parent ID.
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folder_id = ((struct casio_smem_header_s *)inode)->parent.id;
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// Return the next file of the directory.
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sibling_inode = smemfs_USB2_walk(inode, inode, folder_id, WALK_FLAG_ID_CHECK_PARENT);
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// Stop atomic operation
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atomic_stop();
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return (sibling_inode);
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}
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