FreeCalypso > hg > freecalypso-tools
view libserial-linux/baudtab.c @ 965:2969032bdfac
fcup-smsend[mult]: fix buglet in K&R C NULL pointer passing
The only 100% safe way to pass a NULL pointer as a function argument
in K&R C is to cast 0 to a pointer type; failing to do so may cause
mysterious bugs (invalid stack frames or garbage in argument registers)
on 64-bit machines. This issue has already been fixed in most of
FC host tools, but I just found some missed spots: passing of NULL UDH
to PDU encoding functions in fcup-smsend[mult] in the case of single
(not concatenated) SMS.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Fri, 01 Sep 2023 07:33:51 +0000 |
parents | fd7b447b99e3 |
children |
line wrap: on
line source
/* * This module contains the table of baud rates supported * by this implementation of FreeCalypso libserial. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <asm/termbits.h> #include "baudrate.h" struct baudrate baud_rate_table[] = { /* the first listed rate will be our default */ {"115200", B115200, 0, 0, 100}, {"57600", B57600, 0, 1, 100}, {"38400", B38400, 0, 2, 100}, {"19200", B19200, 0, 4, 50}, /* Non-standard high baud rates */ {"812500", BOTHER, 812500, -1, 1000}, {"406250", BOTHER, 406250, -1, 500}, {"203125", BOTHER, 203125, -1, 250}, /* table search terminator */ {NULL, B0, 0, -1, 0}, }; struct baudrate * find_baudrate_by_name(srch_name) char *srch_name; { struct baudrate *br; for (br = baud_rate_table; br->name; br++) if (!strcmp(br->name, srch_name)) break; if (br->name) return(br); else { fprintf(stderr, "error: baud rate \"%s\" not known\n", srch_name); return(NULL); } }