sanchayanmaity/minix
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5 commits

Author SHA1 Message Date
Ben Gras a587273c56 . expanded grant manipulation interface to more direct 
manipulation
. made fs allocate a grant for every ioctl, even if no data
  is being copied, in order to disambiguate concurrent ioctls
  on the same minor
 2006-06-26 16:08:42 +00:00
Ben Gras 3b814d36d1 Rename paramctl to setgrant. 2006-06-23 15:35:05 +00:00
Ben Gras 002922fa4c New kernel call, SYS_PARAMCTL, that sets parameters of the caller 
and is therefore unprivileged. Used to set grant tables.
 2006-06-23 15:07:41 +00:00
Ben Gras 0e9c6932c4 use malloc() + copy + free() instead of realloc() 2006-06-23 12:07:41 +00:00
Ben Gras 9df1183b94 . removed const from putenv() for g++ 
. added safecopies.c:
  these are library functions to maintain grant tables in own address space
. sys_safecopy.c:
  interfaces to kernel calls to perform safe copy functions in from or to
  foreign process
. changes in i/o fields (type merged with request) reflected in
  library functions (sys_out.c, sys_vinb.c, sys_vinl.c, sys_vinw.c,
  sys_voutb.c, sys_voutl.c, sys_voutw.c)
. type merged with request in sys_sdevio, also now accepts offset which
  is used when a grant is specified (the _DIO_SAFE subtype)
. system printf() function changed to send DIAGNOSTICS_S messages, which
  specify a grant id instead of a direct address for the buffer to be
  printed; tty and log can then safecopy the buffer
 2006-06-20 08:45:04 +00:00