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Returned Value

None.

Notes/Warnings

• The access mode should be the logical OR of one or more flags :

  FS_FILE_ACCESS_MODE_RD	File opened for reads.
  FS_FILE_ACCESS_MODE_WR	File opened for writes.
  FS_FILE_ACCESS_MODE_CREATE	File will be created, if necessary.
  FS_FILE_ACCESS_MODE_TRUNC	File length will be truncated to 0.
  FS_FILE_ACCESS_MODE_APPEND	All writes will be performed at EOF.
  FS_FILE_ACCESS_MODE_EXCL	File will be opened if and only if it does not already exist.
  FS_FILE_ACCESS_MODE_CACHED	File data will be cached.

• If FS_FILE_ACCESS_MODE_TRUNC is set, then FS_FILE_ACCESS_MODE_WR must also be set.
• If FS_FILE_ACCESS_MODE_EXCL is set, then FS_FILE_ACCESS_MODE_CREATE must also be set.
• FS_FILE_ACCESS_MODE_RD and/or FS_FILE_ACCESS_MODE_WR must be set.

• The mode string argument of fs_fopen() function can specify a subset of the possible valid modes for this function. The equivalent modes of fs_fopen() mode strings are shown in the table below.

  fopen() Mode String	mode Equivalent
  “r” or “rb”	FS_FILE_ACCESS_MODE_RD
  “w” or “wb”	FS_FILE_ACCESS_MODE_WR | FS_FILE_ACCESS_MODE_CREATE | FS_FILE_ACCESS_MODE_TRUNC
  “a” or “ab”	FS_FILE_ACCESS_MODE_WR | FS_FILE_ACCESS_MODE_CREATE | FS_FILE_ACCESS_MODE_APPEND
  “r+” or “rb+” or “r+b”	FS_FILE_ACCESS_MODE_RD | FS_FILE_ACCESS_MODE_WR
  “w+” or “wb+” or “w+b”	FS_FILE_ACCESS_MODE_RD | FS_FILE_ACCESS_MODE_WR | FS_FILE_ACCESS_MODE_CREATE | FS_FILE_ACCESS_MODE_TRUNC
  “a+” or “ab+” or “a+b”	FS_FILE_ACCESS_MODE_RD | FS_FILE_ACCESS_MODE_WR | FS_FILE_ACCESS_MODE_CREATE | FS_FILE_ACCESS_MODE_APPEND