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| author | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
|---|---|---|
| committer | Vladimir Azarov <avm@intermediate-node.net> | 2024-10-01 15:47:05 +0200 |
| commit | 4abab5ad6c8465a7528ccdd5f49367da05f78bbd (patch) | |
| tree | ebf009bf1376a5a223a915bc27cbbd791a1316bc /src/ipc/ftok.c | |
Initial version
Diffstat (limited to 'src/ipc/ftok.c')
| -rw-r--r-- | src/ipc/ftok.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/ipc/ftok.c b/src/ipc/ftok.c new file mode 100644 index 0000000..c36b4b6 --- /dev/null +++ b/src/ipc/ftok.c @@ -0,0 +1,10 @@ +#include <sys/ipc.h> +#include <sys/stat.h> + +key_t ftok(const char *path, int id) +{ + struct stat st; + if (stat(path, &st) < 0) return -1; + + return ((st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16) | ((id & 0xffu) << 24)); +} |