diff options
Diffstat (limited to 'src/lib9/readn.c')
-rw-r--r-- | src/lib9/readn.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/lib9/readn.c b/src/lib9/readn.c new file mode 100644 index 00000000..e7b9d138 --- /dev/null +++ b/src/lib9/readn.c @@ -0,0 +1,21 @@ +#include <lib9.h> + +long +readn(int f, void *av, long n) +{ + char *a; + long m, t; + + a = av; + t = 0; + while(t < n){ + m = read(f, a+t, n-t); + if(m <= 0){ + if(t == 0) + return m; + break; + } + t += m; + } + return t; +} |