54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
#include "fs.h"
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#include <sys/stat.h>
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#include "buf.h"
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#include "inode.h"
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#include <minix/vfsif.h>
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/*===========================================================================*
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* fs_newnode *
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*===========================================================================*/
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int fs_newnode(message *fs_m_in, message *fs_m_out)
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{
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register int r = OK;
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mode_t bits;
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struct inode *rip;
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uid_t uid;
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gid_t gid;
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dev_t dev;
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uid = fs_m_in->m_vfs_fs_newnode.uid;
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gid = fs_m_in->m_vfs_fs_newnode.gid;
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bits = fs_m_in->m_vfs_fs_newnode.mode;
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dev = fs_m_in->m_vfs_fs_newnode.device;
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/* Try to allocate the inode */
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if( (rip = alloc_inode(dev, bits, uid, gid) ) == NULL) return(err_code);
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switch (bits & S_IFMT) {
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case S_IFBLK:
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case S_IFCHR:
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rip->i_rdev = dev; /* Major/minor dev numbers */
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break;
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case S_IFIFO:
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if ((get_block(dev, rip->i_num)) == NULL)
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r = EIO;
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break;
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default:
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r = EIO; /* Unsupported file type */
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}
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if (r != OK) {
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free_inode(rip);
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} else {
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/* Fill in the fields of the response message */
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fs_m_out->m_fs_vfs_newnode.inode = rip->i_num;
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fs_m_out->m_fs_vfs_newnode.mode = rip->i_mode;
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fs_m_out->m_fs_vfs_newnode.file_size = rip->i_size;
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fs_m_out->m_fs_vfs_newnode.uid = rip->i_uid;
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fs_m_out->m_fs_vfs_newnode.gid = rip->i_gid;
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fs_m_out->m_fs_vfs_newnode.device = dev;
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}
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return(r);
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}
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