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/* ISC license. */
#include <sys/uio.h>
#include <string.h>
#include <stdint.h>
#include <errno.h>
#include <skalibs/uint16.h>
#include <skalibs/uint32.h>
#include <skalibs/tai.h>
#include <skalibs/gensetdyn.h>
#include <skalibs/textclient.h>
#include <s6/s6lock.h>
int s6lock_acquire (s6lock_t *a, uint16_t *u, char const *path, uint32_t options, tain const *limit, tain const *deadline, tain *stamp)
{
size_t pathlen = strlen(path) ;
char tmp[23] = "--<" ;
struct iovec v[2] = { { .iov_base = tmp, .iov_len = 23 }, { .iov_base = (char *)path, .iov_len = pathlen + 1 } } ;
uint32_t i ;
if (pathlen > UINT32_MAX) return (errno = ENAMETOOLONG, 0) ;
if (!gensetdyn_new(&a->data, &i)) return 0 ;
if (i > UINT16_MAX)
{
gensetdyn_delete(&a->data, i) ;
return (errno = EMFILE, 0) ;
}
uint16_pack_big(tmp, (uint16_t)i) ;
uint32_pack_big(tmp+3, options) ;
tain_pack(tmp+7, limit) ;
uint32_pack_big(tmp+19, (uint32_t)pathlen) ;
if (!textclient_commandv(&a->connection, v, 2, deadline, stamp))
{
int e = errno ;
gensetdyn_delete(&a->data, i) ;
errno = e ;
return 0 ;
}
*GENSETDYN_P(char, &a->data, i) = EAGAIN ;
*u = i ;
return 1 ;
}
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