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- #include "lib.h"
-
- #define OK 0
-
- PUBLIC int errno; /* place where error numbers go */
-
- PUBLIC int callm1(proc, syscallnr, int1, int2, int3, ptr1, ptr2, ptr3)
- int proc; /* FS or MM */
- int syscallnr; /* which system call */
- int int1; /* first integer parameter */
- int int2; /* second integer parameter */
- int int3; /* third integer parameter */
- _CONST _VOIDSTAR ptr1; /* pointer parameter */
- _CONST _VOIDSTAR ptr2; /* pointer parameter */
- _CONST _VOIDSTAR ptr3; /* pointer parameter */
- {
- /* Send a message and get the response. The 'M.m_type' field of the
- * reply contains a value (>= 0) or an error code (<0). Use message format m1.
- */
- M.m1_i1 = int1;
- M.m1_i2 = int2;
- M.m1_i3 = int3;
- M.m1_p1 = ptr1;
- M.m1_p2 = ptr2;
- M.m1_p3 = ptr3;
- return callx(proc, syscallnr);
- }
-
-
-
-
-
- PUBLIC int callm3(proc, syscallnr, int1, name)
- int proc; /* FS or MM */
- int syscallnr; /* which system call */
- int int1; /* integer parameter */
- _CONST char *name; /* string */
- {
- /* This form of system call is used for those calls that contain at most
- * one integer parameter along with a string. If the string fits in the
- * message, it is copied there. If not, a pointer to it is passed.
- */
- register int k;
- register char *rp;
- k = len(name);
- M.m3_i1 = k;
- M.m3_i2 = int1;
- M.m3_p1 = name;
- rp = &M.m3_ca1[0];
- if (k <= M3_STRING) while (k--) *rp++ = *name++;
- return callx(proc, syscallnr);
- }
-
-
-
-
-
- PUBLIC int callx(proc, syscallnr)
- int proc; /* FS or MM */
- int syscallnr; /* which system call */
- {
- /* Send a message and get the response. The 'M.m_type' field of the
- * reply contains a value (>= 0) or an error code (<0).
- */
- int k;
-
- M.m_type = syscallnr;
- k = sendrec(proc, &M);
- if (k != OK) return(k); /* send itself failed */
- if (M.m_type < 0) {errno = -M.m_type; return(-1);}
- return(M.m_type);
- }
-
-
-
-
-
- PUBLIC int len(s)
- _CONST register char *s; /* character string whose length is needed */
- {
- /* Return the length of a character string, including the 0 at the end. */
- register int k;
-
- k = 0;
- while (*s++ != 0) k++;
- return(k+1); /* return length including the 0-byte at end */
- }
-