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annotate ffstools/cal2text/mkdir.c @ 965:2969032bdfac

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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 d41edd329670
children
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d41edd329670 fc-cal2text utility written, compiles
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1 #include <sys/types.h>
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2 #include <sys/stat.h>
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3 #include <stdio.h>
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4 #include <stdlib.h>
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5 #include <unistd.h>
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6
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7 mkdir_existok(pathname)
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8 char *pathname;
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9 {
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10 int rc;
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11 struct stat st;
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12
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13 rc = stat(pathname, &st);
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14 if (rc < 0) {
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15 rc = mkdir(pathname, 0777);
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16 if (rc < 0) {
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17 perror(pathname);
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18 exit(1);
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19 }
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20 return(0);
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21 } else {
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22 if (S_ISDIR(st.st_mode))
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23 return(0);
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24 else {
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25 fprintf(stderr,
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26 "error: %s already exists and is not a directory\n",
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27 pathname);
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28 exit(1);
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29 }
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30 }
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31 }