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sysfs(2)
NAME
  sysfs - gather information about file system types

SYNOPSIS
  #include <sys/fstyp.h>
  #include <sys/fsid.h>

  int sysfs(
	  int opcode,
	  const char *fsname );

  int sysfs(
	  int opcode,
	  int fs_index,
	  char *buf );

  int sysfs(
	  int opcode );

PARAMETERS
  buf Points to the buffer where the file system type is placed.  The buffer
      size must be equal to FSTYPSZ as defined in <sys/fstyp.h>.

  fs_index
      Specifies an index file system type.

  fsname
      Specifies a null-terminated file system type identifier.

  opcode
      Specifies an operation used to obtain information about the file system
      types.

DESCRIPTION
  This function gathers information about configured file system types.
  Depending on the operation you want to perform, the opcode parameter may be
  specified by itself, or in combination with the other available parameters
  as shown in the SYNOPSIS section.

  The opcode parameter may be one of the following:

  GETFSIND
      Must be specified with the fsname parameter.  This operation changes
      the specified null-terminated file system type identifier to a file
      system type identifier.

  GETFSTYP
      Must be specified with the parameters fs_index and buf. This operation
      changes the specified file system type index to a null-terminated type
      file system type identifier and writes it into the buffer specified.

  GETNFSTYP
      Specified by itself, this operation requests the total number of file
      system types configured in the system to be returned.

RETURN VALUES
  The following values are returned on success:

    ·  If GETFSIND is specified, the file system type index is returned.

    ·  If GETFSTYP is specified, a value of zero (0) is returned.

    ·  If GETNFSTYP is specified, the number of file system types configured
       in the system is returned.

  On error, a value of -1 is returned and errno is set.

ERRORS
  One or more of the following may be returned on failure:

  [EINVAL]
      Indicates an invalid file system identifier is pointed to fsname, the
      specified fs_index is either zero (0) or invalid, or the specified
      opcode is invalid.

  [EFAULT]
      Indicates that either fsname or buf is pointing to an invalid user
      address.

  [ENOSYS]
      Indicates that a file system was installed with a name that exceeds the
      buffer size of FSTYPSZ.

Index for Section 2

Alphabetical listing for S

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