jehanne/sys/src/cmd/auth/lib/readarg.c

#include <u.h>
#include <lib9.h>
#include <bio.h>
#include <authsrv.h>
#include "authcmdlib.h"

int
readarg(int fd, char *arg, int len)
{
	char buf[1];
	int i;

	i = 0;
	memset(arg, 0, len);
	while(read(fd, buf, 1) == 1){
		if(i < len - 1)
			arg[i++] = *buf;
		if(*buf == '\0'){
			arg[i] = '\0';
			return 0;
		}
	}
	return -1;
}
first usable version of kernel and commands After an year of hard work, this is a first "usable" version of Jehanne. 2016-11-25 17:18:40 +01:00			`#include <u.h>`
libc: introduce "jehanne_" namespace With this commit all functions declared in libc.h have been renamed with the "jehanne_" prefix. This is done for several reason: - it removes conflicts during symbol resolution when linking standard C libraries like newlib or musl - it allows programs depending on a standard C library to directly link to a library depending on our non standard libc (eg libsec). To ease transiction two files are provided: - sys/include/lib9.h that can be included instead of <libc.h> to use the old names (via a simple set of macros) - sys/src/lib/c/lib9.c that can be compiled with a program where the macro provided by lib9.h are too dumb (see for example rc or grep). In the kernel port/lib.h has been modified accordingly and some of the functions it directly provides has been renamed too (eg malloc in qmalloc.c and print in devcons.c). 2017-04-19 23:33:14 +02:00			`#include <lib9.h>`
first usable version of kernel and commands After an year of hard work, this is a first "usable" version of Jehanne. 2016-11-25 17:18:40 +01:00			`#include <bio.h>`
			`#include <authsrv.h>`
			`#include "authcmdlib.h"`

			`int`
			`readarg(int fd, char *arg, int len)`
			`{`
			`char buf[1];`
			`int i;`

			`i = 0;`
			`memset(arg, 0, len);`
			`while(read(fd, buf, 1) == 1){`
			`if(i < len - 1)`
			`arg[i++] = *buf;`
			`if(*buf == '\0'){`
			`arg[i] = '\0';`
			`return 0;`
			`}`
			`}`
			`return -1;`
			`}`