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Implement gctl_change_param() function, which changes value of existing

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parameter.

MFC after:	1 week
This commit is contained in:
Pawel Jakub Dawidek 2007-01-25 11:35:27 +00:00
parent c4b1628e07
commit 1378624c2e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=166215
2 changed files with 28 additions and 0 deletions
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26
sbin/geom/misc/subr.c
View File

@ -388,3 +388,29 @@ gctl_get_ascii(struct gctl_req *req, const char *pfmt, ...)
va_end(ap);
return (p);
}
int
gctl_change_param(struct gctl_req *req, const char *name, int len,
const void *value)
{
struct gctl_req_arg *ap;
unsigned i;
if (req == NULL || req->error != NULL)
return (EDOOFUS);
for (i = 0; i < req->narg; i++) {
ap = &req->arg[i];
if (strcmp(ap->name, name) != 0)
continue;
ap->value = __DECONST(void *, value);
if (len >= 0) {
ap->flag &= ~GCTL_PARAM_ASCII;
ap->len = len;
} else if (len < 0) {
ap->flag |= GCTL_PARAM_ASCII;
ap->len = strlen(value) + 1;
}
return (0);
}
return (ENOENT);
}

2
sbin/geom/misc/subr.h
View File

@ -45,4 +45,6 @@ void gctl_error(struct gctl_req *req, const char *error, ...) __printflike(2, 3)
int gctl_get_int(struct gctl_req *req, const char *pfmt, ...) __printflike(2, 3);
intmax_t gctl_get_intmax(struct gctl_req *req, const char *pfmt, ...) __printflike(2, 3);
const char *gctl_get_ascii(struct gctl_req *req, const char *pfmt, ...) __printflike(2, 3);
int gctl_change_param(struct gctl_req *req, const char *name, int len,
const void *value);
#endif /* !_SUBR_H_ */