POSIX API
6-1 SUPPORTED FUNCTIONS
The supported POSIX functions are listed in the table below. These are divided into four
groups. First, the functions which operate on file objects ( FS_FILE s) are grouped under file
access (or simply file) functions. An application stores information in a file system by
creating a file or appending new information to an existing file. At a later time, this
information may be retrieved by reading the file. Other functions support these capabilities;
for example, the application can move to a specified location in the file or query the file
system to get information about the file.
A separate set of file operations (or entry) functions manage the files and directories
available on the system. Using these functions, the application can create, delete and
rename files and directories.
The entries within a directory can be traversed using the directory access (or simply
directory) functions, which operate on directory objects ( FS_DIR s). The name and
properties of the entries are returned within a struct fs_dirent structure.
The final group of functions is the working directory functions. For information about using
file and path names, see section 4-3 “μC/FS File and Directory Names and Paths” on
page 62.
Function
fs_asctime_r()
fs_chdir()
fs_clearerr()
fs_closedir()
fs_ctime_r()
fs_fclose()
fs_feof()
fs_ferror()
fs_fflush()
fs_fgetpos()
fs_flockfile()
fs_fopen()
fs_fread()
POSIX Equivalent
asctime_r()
chdir()
clearerr()
closedir()
ctime_r()
fclose()
feof()
ferror()
fflush()
fgetpos()
flockfile()
fopen()
fread()
Function
fs_ftruncate()
fs_ftrylockfile()
fs_funlockfile()
fs_fwrite()
fs_getcwd()
fs_localtime_r()
fs_mkdir()
fs_mktime()
fs_rewind()
fs_opendir()
fs_readdir_r()
fs_remove()
fs_rename()
POSIX Equivalent
ftruncate()
ftrylockfile()
funlockfile()
fwrite()
getcwd()
localtime_r()
mkdir()
mktime()
rewind()
opendir()
readdir_r()
remove()
rename()
84
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