1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
9 /* for O_DIRECTORY and O_DIRECT */
13 #include <sys/types.h>
21 typedef struct flag_mapping {
26 FLAG_MAPPING flag_table[] = {
27 {"O_RDONLY", O_RDONLY},
28 {"O_WRONLY", O_WRONLY},
32 {"O_NOCTTY", O_NOCTTY},
34 {"O_APPEND", O_APPEND},
35 {"O_NONBLOCK", O_NONBLOCK},
36 {"O_NDELAY", O_NDELAY},
38 {"O_DIRECT", O_DIRECT},
39 {"O_LARGEFILE", O_LARGEFILE},
40 {"O_DIRECTORY", O_DIRECTORY},
41 {"O_NOFOLLOW", O_NOFOLLOW},
45 void Usage_and_abort(void)
47 fprintf(stderr, "Usage: openfile -f flags [ -m mode ] filename \n");
48 fprintf(stderr, "e.g. openfile -f O_RDWR:O_CREAT -m 0755 /etc/passwd\n");
52 int main(int argc, char** argv)
67 while ((c = getopt (argc, argv, "f:m:")) != -1) {
72 cloned_flags = (char *)malloc(strlen(optarg)+1);
73 if (cloned_flags == NULL) {
74 fprintf(stderr, "Insufficient memory.\n");
78 strncpy(cloned_flags, optarg, strlen(optarg)+1);
79 for (tmp = strtok(optarg, ":|"); tmp;
80 tmp = strtok(NULL, ":|")) {
83 printf("flags = %s\n",tmp);
86 for (i = 0; flag_table[i].flag != -1; i++) {
87 if (!strcmp(tmp, flag_table[i].string)){
88 flags |= flag_table[i].flag;
93 if (flag_table[i].flag == -1) {
94 fprintf(stderr, "No such flag: %s\n",
100 printf("flags = %x\n", flags);
106 printf("mode = %s\n", optarg);
108 mode = strtol(optarg, NULL, 8);
111 printf("mode = %o\n", mode);
115 fprintf(stderr, "Bad parameters.\n");
120 if (optind == argc) {
121 fprintf(stderr, "Bad parameters.\n");
125 fname = argv[optind];
128 if (!flag_set || !file_set) {
129 fprintf(stderr, "Missing flag or file-name\n");
135 fd = open(fname, flags, mode);
137 fd = open(fname, flags);
140 fprintf(stderr, "Succeed in opening file \"%s\"(flags=%s",
141 fname, cloned_flags);
144 fprintf(stderr, ", mode=%o", mode);
145 fprintf(stderr, ")\n");
148 fprintf(stderr, "Error in opening file \"%s\"(flags=%s",
149 fname, cloned_flags);
151 fprintf(stderr, ", mode=%o", mode);
152 fprintf(stderr, ") %d: %s\n", errno, strerror(errno));