Developer's Daily | Unix by Example |
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readdir ? read a directory |
#include <sys/types.h> #include <dirent.h> struct dirent *readdir(DIR *dir); |
The readdir() function returns a pointer to a dirent structure representing the next directory entry in the directory stream pointed to by dir. It returns NULL on reaching the end-of-file or if an error occurred. The data returned by readdir() is overwritten by subsequent calls to readdir() for the same directory stream. According to POSIX, the dirent structure contains a field char d_name[] of unspecified size, with at most NAME_MAX characters preceding the terminating null character. Use of other fields will harm the portability of your programs. |
The readdir() function returns a pointer to a dirent structure, or NULL if an error occurs or end-of-file is reached. |
EBADF |
Invalid directory stream descriptor dir. |
SVID 3, POSIX, BSD 4.3 |
read(2), opendir(3), closedir(3), rewinddir(3), seekdir(3), telldir(3), scandir(3) |