| [9] | 1 | #include "sysutil.h"
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| 2 | #include <minix/config.h>
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| 3 | #include <string.h>
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| 4 |
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| 5 | PRIVATE int argc = 0;
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| 6 | PRIVATE char **argv = NULL;
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| 7 |
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| 8 | FORWARD _PROTOTYPE( char *find_key, (const char *params, const char *key));
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| 9 |
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| 10 | /*===========================================================================*
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| 11 | * env_setargs *
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| 12 | *===========================================================================*/
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| 13 | PUBLIC void env_setargs(arg_c, arg_v)
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| 14 | int arg_c;
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| 15 | char *arg_v[];
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| 16 | {
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| 17 | argc= arg_c;
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| 18 | argv= arg_v;
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| 19 | }
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| 20 |
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| 21 | /*===========================================================================*
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| 22 | * env_get_param *
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| 23 | *===========================================================================*/
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| 24 | PUBLIC int env_get_param(key, value, max_len)
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| 25 | char *key; /* which key to look up */
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| 26 | char *value; /* where to store value */
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| 27 | int max_len; /* maximum length of value */
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| 28 | {
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| 29 | message m;
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| 30 | static char mon_params[128*sizeof(char *)]; /* copy parameters here */
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| 31 | char *key_value;
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| 32 | int i, s, keylen;
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| 33 |
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| 34 | if (key == NULL)
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| 35 | return EINVAL;
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| 36 |
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| 37 | keylen= strlen(key);
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| 38 | for (i= 1; i<argc; i++)
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| 39 | {
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| 40 | if (strncmp(argv[i], key, keylen) != 0)
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| 41 | continue;
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| 42 | if (strlen(argv[i]) <= keylen)
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| 43 | continue;
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| 44 | if (argv[i][keylen] != '=')
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| 45 | continue;
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| 46 | key_value= argv[i]+keylen+1;
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| 47 | if (strlen(key_value)+1 > EP_BUF_SIZE)
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| 48 | return(E2BIG);
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| 49 | strcpy(value, key_value);
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| 50 | return OK;
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| 51 | }
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| 52 |
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| 53 | /* Get copy of boot monitor parameters. */
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| 54 | m.m_type = SYS_GETINFO;
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| 55 | m.I_REQUEST = GET_MONPARAMS;
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| 56 | m.I_ENDPT = SELF;
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| 57 | m.I_VAL_LEN = sizeof(mon_params);
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| 58 | m.I_VAL_PTR = mon_params;
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| 59 | if ((s=_taskcall(SYSTASK, SYS_GETINFO, &m)) != OK) {
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| 60 | printf("SYS_GETINFO: %d (size %u)\n", s, sizeof(mon_params));
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| 61 | return(s);
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| 62 | }
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| 63 |
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| 64 | /* We got a copy, now search requested key. */
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| 65 | if ((key_value = find_key(mon_params, key)) == NULL)
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| 66 | return(ESRCH);
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| 67 |
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| 68 | /* Value found, make the actual copy (as far as possible). */
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| 69 | strncpy(value, key_value, max_len);
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| 70 |
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| 71 | /* See if it fits in the client's buffer. */
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| 72 | if ((strlen(key_value)+1) > max_len) return(E2BIG);
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| 73 | return(OK);
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| 74 | }
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| 75 |
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| 76 |
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| 77 | /*==========================================================================*
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| 78 | * find_key *
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| 79 | *==========================================================================*/
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| 80 | PRIVATE char *find_key(params,name)
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| 81 | const char *params;
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| 82 | const char *name;
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| 83 | {
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| 84 | register const char *namep;
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| 85 | register char *envp;
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| 86 |
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| 87 | for (envp = (char *) params; *envp != 0;) {
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| 88 | for (namep = name; *namep != 0 && *namep == *envp; namep++, envp++)
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| 89 | ;
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| 90 | if (*namep == '\0' && *envp == '=')
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| 91 | return(envp + 1);
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| 92 | while (*envp++ != 0)
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| 93 | ;
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| 94 | }
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| 95 | return(NULL);
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| 96 | }
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| 97 |
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