diff options
Diffstat (limited to 'seeking.c')
-rw-r--r-- | seeking.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/seeking.c b/seeking.c new file mode 100644 index 0000000..c2f00ed --- /dev/null +++ b/seeking.c @@ -0,0 +1,24 @@ +#include <u.h> +#include <libc.h> + +#define MAXREADS 3 + +void +main(void) +{ + int fd, i; + char buf[4]; + + fd = open("/mnt/acpi/battery", OREAD); + if(fd < 0) + sysfatal("couldn't open it"); + + for(i = 0; i < MAXREADS; i++){ + pread(fd, buf, sizeof buf, 0); + buf[sizeof(buf)-1] = '\0'; + print(buf); + } + + close(fd); + exits("done"); +} |