Directory System Call Support

Functions

DIR *opendir(const char *name)

Open a directory.

Parameters:: name – [in] Directory path to open
Returns:: a pointer to the directory stream. On error, NULL is returned, and errno is set appropriately.

struct dirent *readdir(DIR *dirp)

Read a directory.

Parameters:: dirp – [in] directory stream provided by opendir
Returns:: On success, a pointer to a dirent structure. (This structure may be statically allocated; do not attempt to free it.)

long telldir(DIR *dirp)

return current location in directory stream. This function may not supported by all filesystem drivers

Parameters:: dirp – [in] directory stream provided by opendir
Returns:: On success, function returns the current location in the directory stream. On error, -1 is returned, and errno is set appropriately

void rewinddir(DIR *dirp)

reset directory stream. This function may not supported by all filesystem drivers

void seekdir(DIR *dirp, long loc)

set the position of the next readdir call in the directory stream. This function may not supported by all filesystem drivers

Parameters:

int closedir(DIR *dirp)

Close a directory.

Parameters:: dirp – [in] directory stream provided by opendir
Returns:: 0 on success. On error, -1 is returned, and errno is set appropriately.

struct dirent

Directory entry structure

Public Members

enum _dtype_e

File type flags for d_type

Values: