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DEVNAME(3) Library Functions Manual DEVNAME(3)

devnameget device name

library “libc”

#include <stdlib.h>
#include <sys/stat.h>

char *
devname(dev_t dev, mode_t type);

The devname() function returns a pointer to the name of the block or character device in “/dev” with a device number of dev, and a file type matching the one encoded in type which must be one of S_IFBLK or S_IFCHR. If no device matches the specified values, or no information is available, NULL is returned.

The traditional display for applications when no device is found is the string “??”.

/var/run/dev.cdb
Device database file.

stat(2), dev_mkdb(8)

The devname function call appeared in 4.4BSD.

June 3, 2012 NetBSD-7.0.1