https://github.com/illiliti/libdemi

Device enumeration, monitoring and introspecting library
https://github.com/illiliti/libdemi

Last synced: 5 days ago
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Device enumeration, monitoring and introspecting library

• Host: GitHub
• URL: https://github.com/illiliti/libdemi
• Owner: illiliti
• License: isc
• Created: 2021-10-11T16:52:27.000Z (about 3 years ago)
• Default Branch: master
• Last Pushed: 2022-03-28T17:48:04.000Z (over 2 years ago)
• Last Synced: 2024-05-08T20:04:19.173Z (6 months ago)
• Language: C
• Size: 113 KB
• Stars: 7
• Watchers: 4
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-systemd - libdemi
• awesome-systemd - libdemi

README

        
# libdemi

**!!! EXPERIMENTAL !!!**

Device enumeration, monitoring and introspecting library

## Showcase

```c

#include 

#include 

#include 

#include 

int main(void)

{

    // Initialize demi file descriptor with no/zero flags.

    // Optionally, DEMI_CLOEXEC and DEMI_NONBLOCK can be bitwise ORed in flags

    // to atomically set close-on-exec flag and nonblocking mode respectively.

    int fd = demi_init(0);

    if (fd == -1) {

        return EXIT_FAILURE;

    }

    struct demi_event de;

    // Read pending event. This call will block since DEMI_NONBLOCK was not set.

    while (demi_read(fd, &de) != -1) {

        // de_devname might not contain devname, indicating that the event shall be ignored.

        if (de.de_devname[0] == '\0') {

            continue;

        }

        // Prepend /dev/ to devname, so that we have full path to devnode.

        char devnode[sizeof(de.de_devname) + sizeof("/dev/")];

        snprintf(devnode, sizeof(devnode), "/dev/%s", de.de_devname);

        // Print devnode and code of event type.

        printf("%s (code %d)\n", devnode, de.de_type);

    }

    // Do not forget to close file descriptor when you are done.

    close(fd);

    return EXIT_SUCCESS;

}

```

## See also

https://github.com/illiliti/kiss-libdemi