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| author | Rich Felker <dalias@aerifal.cx> | 2011-02-12 00:22:29 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2011-02-12 00:22:29 -0500 |
| commit | 0b44a0315b47dd8eced9f3b7f31580cf14bbfc01 (patch) | |
| tree | 6eaef0d8a720fa3da580de87b647fff796fe80b3 /src/ipc/ftok.c | |
| download | musl-0b44a0315b47dd8eced9f3b7f31580cf14bbfc01.tar.gz musl-0b44a0315b47dd8eced9f3b7f31580cf14bbfc01.tar.bz2 musl-0b44a0315b47dd8eced9f3b7f31580cf14bbfc01.tar.xz musl-0b44a0315b47dd8eced9f3b7f31580cf14bbfc01.zip | |
initial check-in, version 0.5.0v0.5.0
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 00000000..cd6002ed --- /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 & 0xff) << 24)); +} |