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Make sure we actually get a file descriptor before creating new WOFS file

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This commit is contained in:
James Snyder 2014-04-17 12:50:39 -05:00
parent fc8f3e4a3d
commit 5c0f204775
1 changed files with 15 additions and 2 deletions
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17
src/romfs.c
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@ -211,6 +211,14 @@ static int romfs_open_r( struct _reent *r, const char *path, int flags, int mode
r->_errno = ENOSPC;
return -1;
}
// Make sure we can get a file descriptor before writing
if( ( i = romfs_find_empty_fd() ) < 0 )
{
r->_errno = ENFILE;
return -1;
}
// Write the name of the file
pfsdata->writef( path, firstfree, strlen( path ) + 1, pfsdata );
firstfree += strlen( path ) + 1; // skip over the name
@ -229,10 +237,15 @@ static int romfs_open_r( struct _reent *r, const char *path, int flags, int mode
r->_errno = ENOENT;
return -1;
}
if( ( i = romfs_find_empty_fd() ) < 0 )
{
r->_errno = ENFILE;
return -1;
}
}
// Find a free FD and copy the descriptor information
// Copy the descriptor information
tempfs.flags = lflags;
i = romfs_find_empty_fd();
memcpy( fd_table + i, &tempfs, sizeof( FD ) );
romfs_num_fd ++;
return i;