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/* ISC license. */
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <skalibs/posixplz.h>
#include <skalibs/prog.h>
#include <skalibs/strerr.h>
#include <skalibs/gol.h>
#include <skalibs/tai.h>
#include <skalibs/djbunix.h>
#include <s6-rc/config.h>
#include <s6-rc/s6rc.h>
#define USAGE "s6-rc-set-delete [ -v verbosity ] [ -r repo ] setname..."
#define dieusage() strerr_dieusage(100, USAGE)
static inline void dodelete (char const *repo, char const *setname)
{
size_t repolen = strlen(repo) ;
size_t setlen = strlen(setname) ;
char fn[repolen + setlen + 10] ;
memcpy(fn, repo, repolen) ;
memcpy(fn + repolen, "/sources/", 9) ;
memcpy(fn + repolen + 9, setname, setlen + 1) ;
if (access(fn, W_OK) == -1)
{
if (errno != ENOENT) strerr_diefu2sys(111, "access ", fn) ;
else strerr_warnwu2sys("delete set ", setname) ;
}
else
{
ssize_t r ;
char real[repolen + setlen + 18] ;
memcpy(real, repo, repolen) ;
memcpy(real + repolen, "/sources/", 9) ;
r = readlink(fn, real + repolen + 9, setlen + 9) ;
if (r == -1) strerr_diefu2sys(111, "readlink ", fn) ;
else if (r != 8) strerr_dief3x(102, "symlink ", fn, " points to an invalid name") ;
real[repolen + setlen + 17] = 0 ;
if (unlink(fn) == -1) strerr_diefu2sys(111, "unlink ", fn) ;
rm_rf(real) ;
}
}
enum gola_e
{
GOLA_VERBOSITY,
GOLA_REPODIR,
GOLA_N
} ;
static gol_arg const rgola[2] =
{
{ .so = 'v', .lo = "verbosity", .i = GOLA_VERBOSITY },
{ .so = 'r', .lo = "repodir", .i = GOLA_REPODIR }
} ;
int main (int argc, char const *const *argv)
{
char const *repo = S6RC_REPO_BASE ;
int fdlock ;
unsigned int verbosity = 1 ;
char const *wgola[2] = { 0 } ;
unsigned int golc ;
PROG = "s6-rc-set-delete" ;
golc = gol_main(argc, argv, 0, 0, rgola, 2, 0, wgola) ;
argc -= golc ; argv += golc ;
if (wgola[GOLA_VERBOSITY] && !uint0_scan(wgola[GOLA_VERBOSITY], &verbosity))
strerr_dief1x(100, "verbosity needs to be an unsigned integer") ;
if (wgola[GOLA_REPODIR]) repo = wgola[GOLA_REPODIR] ;
if (!argc) dieusage() ;
for (unsigned int i = 0 ; i < argc ; i++)
if (strchr(argv[i], '/') || strchr(argv[i], '\n'))
strerr_dief1x(100, "set names cannot contain / or newlines") ;
fdlock = s6rc_repo_lock(repo, 1) ;
if (fdlock == -1) strerr_diefu2sys(111, "lock ", repo) ;
tain_now_g() ;
for (unsigned int i = 0 ; i < argc ; i++)
dodelete(repo, argv[i]) ;
return 0 ;
}
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