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main.c
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/*
* Copyright 2005-2024 Gentoo Foundation
* Distributed under the terms of the GNU General Public License v2
*
* Copyright 2005-2008 Ned Ludd - <[email protected]>
* Copyright 2005-2014 Mike Frysinger - <[email protected]>
* Copyright 2018- Fabian Groffen - <[email protected]>
*/
#include "main.h"
#include "applets.h"
#include <xalloc.h>
#include <assert.h>
#include <ctype.h>
#include <sys/time.h>
#include <limits.h>
#include <termios.h>
#include <sys/ioctl.h>
#include "eat_file.h"
#include "rmspace.h"
#include "scandirat.h"
#include "set.h"
#include "xasprintf.h"
/* variables to control runtime behavior */
char *main_overlay;
char *module_name = NULL;
int verbose = 0;
int quiet = 0;
int twidth;
bool nocolor;
char pretend = 0;
char *portarch;
char *portroot;
char *config_protect;
char *config_protect_mask;
char *portvdb;
char *portlogdir;
char *pkg_install_mask;
char *binhost;
char *pkgdir;
char *port_tmpdir;
set *features;
set *ev_use;
char *install_mask;
DECLARE_ARRAY(overlays);
DECLARE_ARRAY(overlay_names);
DECLARE_ARRAY(overlay_src);
static char *portedb;
static char *eprefix;
static char *accept_license;
#define STR_DEFAULT "built-in default"
/* helper functions for showing errors */
const char *argv0;
FILE *warnout;
#ifdef EBUG
# include <sys/resource.h>
static void
init_coredumps(void)
{
struct rlimit rl;
rl.rlim_cur = RLIM_INFINITY;
rl.rlim_max = RLIM_INFINITY;
setrlimit(RLIMIT_CORE, &rl);
}
#endif
static void
setup_quiet(void)
{
/* "e" for FD_CLOEXEC */
if (quiet == 0)
warnout = fopen("/dev/null", "we");
++quiet;
}
/* display usage and exit */
void
usage(int status, const char *flags, struct option const opts[],
const char * const help[], const char *desc, int blabber)
{
const char opt_arg[] = "[arg]";
const char a_arg[] = "<arg>";
size_t a_arg_len = strlen(a_arg) + 1;
size_t i;
size_t optlen;
size_t l;
size_t prefixlen;
const char *hstr;
FILE *fp = status == EXIT_SUCCESS ? stdout : warnout;
if (blabber == 0) {
fprintf(fp, "%susage:%s %sq%s %s<applet> <args>%s : %s"
"invoke a portage utility applet\n\n", GREEN,
NORM, YELLOW, NORM, DKBLUE, RED, NORM);
fprintf(fp, "%scurrently defined applets:%s\n", GREEN, NORM);
for (i = 0; applets[i].desc; ++i)
if (applets[i].func)
fprintf(fp, " %s%9s%s %s%-16s%s%s:%s %s\n",
YELLOW, applets[i].name, NORM,
DKBLUE, applets[i].opts, NORM,
RED, NORM, applets[i].desc);
} else if (blabber > 0) {
fprintf(fp, "%susage:%s %s%s%s [opts] %s%s%s %s:%s %s\n",
GREEN, NORM,
YELLOW, applets[blabber].name, NORM,
DKBLUE, applets[blabber].opts, NORM,
RED, NORM, applets[blabber].desc);
if (desc)
fprintf(fp, "\n%s\n", desc);
}
if (module_name != NULL)
fprintf(fp, "%sloaded module:%s\n%s%8s%s %s<args>%s\n",
GREEN, NORM, YELLOW, module_name, NORM, DKBLUE, NORM);
/* Prescan the --long opt length to auto-align. */
optlen = 0;
for (i = 0; opts[i].name; ++i) {
l = strlen(opts[i].name);
if (opts[i].has_arg != no_argument)
l += a_arg_len;
optlen = MAX(l, optlen);
}
fprintf(fp, "\n%soptions:%s -[%s]\n", GREEN, NORM, flags);
for (i = 0; opts[i].name; ++i) {
/* this assert is a life saver when adding new applets. */
assert(help[i] != NULL);
/* first output the short flag if it has one */
if (opts[i].val > '~' || opts[i].val < ' ')
fprintf(fp, " ");
else
fprintf(fp, " -%c, ", opts[i].val);
/* then the long flag */
if (opts[i].has_arg == no_argument)
fprintf(fp, "--%-*s %s*%s ", (int)optlen, opts[i].name,
RED, NORM);
else
fprintf(fp, "--%s %s%s%s%*s %s*%s ",
opts[i].name,
DKBLUE, (opts[i].has_arg == a_argument ? a_arg : opt_arg), NORM,
(int)(optlen - strlen(opts[i].name) - a_arg_len), "",
RED, NORM);
/* then wrap the help text, if necessary */
prefixlen = 6 + 2 + optlen + 1 + 1 + 1;
if ((size_t)twidth < prefixlen + 10) {
fprintf(fp, "%s\n", help[i]);
} else {
const char *t;
hstr = help[i];
l = strlen(hstr);
while (twidth - prefixlen < l) {
/* search backwards for a space */
t = &hstr[twidth - prefixlen];
while (t > hstr && !isspace((int)*t))
t--;
if (t == hstr)
break;
fprintf(fp, "%.*s\n%*s",
(int)(t - hstr), hstr, (int)prefixlen, "");
l -= t + 1 - hstr;
hstr = t + 1; /* skip space */
}
fprintf(fp, "%s\n", hstr);
}
}
exit(status);
}
void
version_barf(void)
{
const char *vcsid = "";
const char *eprefixid = "";
#ifndef VERSION
# define VERSION "git"
#endif
#ifdef VCSID
vcsid = " (" VCSID ")";
#endif
if (strlen(CONFIG_EPREFIX) > 1)
eprefixid = "configured for " CONFIG_EPREFIX "\n";
printf("portage-utils-%s%s\n"
"%s"
"written for Gentoo by solar, vapier and grobian\n",
VERSION, vcsid, eprefixid);
exit(EXIT_SUCCESS);
}
void
freeargv(int argc, char **argv)
{
while (argc--)
free(argv[argc]);
free(argv);
}
void
makeargv(const char *string, int *argc, char ***argv)
{
int curc = 2;
char *q, *p, *str;
(*argv) = xmalloc(sizeof(char *) * curc);
*argc = 1;
(*argv)[0] = xstrdup(argv0);
/* shortcut empty strings */
while (isspace((int)*string))
string++;
if (*string == '\0')
return;
q = xstrdup(string);
str = q;
remove_extra_space(str);
rmspace(str);
while (str) {
if ((p = strchr(str, ' ')) != NULL)
*(p++) = '\0';
if (*argc == curc) {
curc *= 2;
(*argv) = xrealloc(*argv, sizeof(char *) * curc);
}
(*argv)[*argc] = xstrdup(str);
(*argc)++;
str = p;
}
free(q);
}
static void
strincr_var(const char *name, const char *s, char **value, size_t *value_len)
{
size_t len;
char *p;
char *nv;
char brace;
bool haddashstar;
/* find/skip any -* instances */
nv = (char *)s;
while ((p = strstr(nv, "-*")) != NULL)
nv = p + 2;
haddashstar = nv != (char *)s;
len = strlen(nv);
if (haddashstar && len < *value_len) {
p = *value;
*p = '\0'; /* in case len == 0 */
} else if (haddashstar) {
p = *value = xrealloc(*value, len + 1);
} else {
*value = xrealloc(*value, *value_len + 1 + len + 1);
p = &(*value)[*value_len];
if (*value_len > 0)
*p++ = ' ';
}
memcpy(p, nv, len + 1);
/* This function is mainly used by the startup code for parsing
make.conf and stacking variables remove.
variables can be in the form of ${v} or $v
works:
FEATURES="${FEATURES} foo"
FEATURES="$FEATURES foo"
FEATURES="baz bar -* foo"
wont work:
FEATURES="${OTHERVAR} foo"
FEATURES="-nls nls -nls"
FEATURES="nls nls nls"
*/
len = strlen(name);
while ((p = strchr(p, '$')) != NULL) {
nv = p;
p++; /* skip $ */
brace = *p == '{';
if (brace)
p++;
if (strncmp(p, name, len) == 0) {
p += len;
if (brace && *p == '}') {
p++;
memset(nv, ' ', p - nv);
} else if (!brace && (*p == '\0' || isspace((int)*p))) {
memset(nv, ' ', p - nv);
}
}
}
remove_extra_space(*value);
*value_len = strlen(*value);
/* we should sort here */
}
static void
setincr_var(const char *s, set **vals)
{
int i;
int argc;
char **argv;
bool ignore;
/* This tries to mimick parsing of portage envvars and the stacking
* thereof. In particular USE and FEATURES, where also negation can
* happen (- prefix). Variables are supported in form of ${v} or
* $v, but there's no actual replacement happening, we just ignore
* any of such forms.
* works:
* FEATURES="${FEATURES} foo"
* FEATURES="$FEATURES foo"
* FEATURES="baz bar -* foo"
*
* wont work:
* FEATURES="${OTHERVAR} foo"
* FEATURES="-* ${FEATURES}"
*/
if (s == NULL || *s == '\0')
return;
/* break up input */
makeargv(s, &argc, &argv);
for (i = 1 /* skip executable name */; i < argc; i++) {
if (argv[i][0] == '-') {
if (*vals != NULL) {
/* handle negation, when the respective value isn't set, we
* simply ignore/drop it */
if (argv[i][1] == '*') {
clear_set(*vals);
} else {
del_set(&argv[i][1], *vals, &ignore);
}
}
} else if (argv[i][0] == '$') {
/* detect ${var} or $var, simply ignore it completely, for
* all of these should be stacked, so re-including whatever
* there is shouldn't make much sense */
} else {
*vals = add_set_unique(argv[i], *vals, &ignore);
}
}
freeargv(argc, argv);
}
static env_vars *
get_portage_env_var(env_vars *vars, const char *name)
{
size_t i;
for (i = 0; vars[i].name; ++i)
if (!strcmp(vars[i].name, name))
return &vars[i];
return NULL;
}
static void
set_portage_env_var(env_vars *var, const char *value, const char *src)
{
switch (var->type) {
case _Q_BOOL:
*var->value.b = 0;
if (strcasecmp(value, "true") == 0 ||
strcasecmp(value, "yes") == 0 ||
strcmp(value, "1") == 0)
*var->value.b = 1;
free(var->src);
var->src = xstrdup(src);
break;
case _Q_STR:
free(*var->value.s);
*var->value.s = xstrdup(value);
var->value_len = strlen(value);
free(var->src);
var->src = xstrdup(src);
break;
case _Q_ISTR:
case _Q_ISET:
if (strcmp(var->src, STR_DEFAULT) != 0) {
size_t l = strlen(var->src) + 2 + strlen(src) + 1;
char *p = xmalloc(sizeof(char) * l);
snprintf(p, l, "%s, %s", var->src, src);
free(var->src);
var->src = p;
} else {
free(*var->value.s);
*var->value.s = NULL;
var->value_len = 0;
free(var->src);
var->src = xstrdup(src);
}
if (var->type == _Q_ISTR)
strincr_var(var->name, value, var->value.s, &var->value_len);
else
setincr_var(value, var->value.t);
break;
}
}
/* Helper to read a portage file (e.g. make.conf, package.mask), or
* recursively if it points to a directory (we don't care about EAPI for
* dirs, basically PMS 5.2.5 EAPI restriction is ignored) */
enum portage_file_type { ENV_FILE, PMASK_FILE };
static void
read_portage_file(const char *file, enum portage_file_type type, void *data)
{
FILE *fp;
struct dirent **dents;
int dentslen;
char *s;
char *p;
char *buf = NULL;
size_t buflen = 0;
size_t line;
bool incomment;
size_t cbeg;
size_t cend;
char npath[_Q_PATH_MAX * 2];
int i;
env_vars *vars = data;
set *masks = data;
snprintf(npath, sizeof(npath), "%s%s", portroot, file);
if ((dentslen = scandir(npath, &dents, NULL, alphasort)) > 0) {
int di;
struct dirent *d;
/* recurse through all files */
for (di = 0; di < dentslen; di++) {
d = dents[di];
if (d->d_name[0] == '.' || d->d_name[0] == '\0' ||
d->d_name[strlen(d->d_name) - 1] == '~')
continue;
snprintf(npath, sizeof(npath), "%s/%s", file, d->d_name);
read_portage_file(npath, type, data);
}
scandir_free(dents, dentslen);
goto done;
}
fp = fopen(file, "r");
if (fp == NULL)
goto done;
line = 0;
incomment = false;
cbeg = 0;
cend = 0;
while (getline(&buf, &buflen, fp) != -1) {
line++;
rmspace(buf);
if (*buf == '#') {
if (!incomment)
cbeg = cend = line;
else
cend = line;
incomment = true;
continue;
}
incomment = false;
if (*buf == '\0') {
cbeg = cend = 0;
continue;
}
if (type == ENV_FILE) {
size_t curline = line;
/* Handle "source" keyword */
if (strncmp(buf, "source ", 7) == 0) {
const char *sfile = buf + 7;
if (sfile[0] != '/') {
/* handle relative paths */
size_t file_path_len;
s = strrchr(file, '/');
file_path_len = s - file + 1;
snprintf(npath, sizeof(npath), "%.*s/%s",
(int)file_path_len, file, sfile);
sfile = npath;
}
read_portage_file(sfile, type, data);
continue;
}
/* look for our desired variables and grab their value */
for (i = 0; vars[i].name; i++) {
if (buf[vars[i].name_len] != '=' &&
buf[vars[i].name_len] != ' ')
continue;
if (strncmp(buf, vars[i].name, vars[i].name_len))
continue;
/* make sure we handle spaces between the varname, the =,
* and the value:
* VAR=val VAR = val VAR="val"
*/
s = buf + vars[i].name_len;
if ((p = strchr(s, '=')) != NULL)
s = p + 1;
while (isspace(*s))
s++;
if (*s == '"' || *s == '\'') {
char *endq;
char q = *s;
/* make sure we handle spacing/comments after the quote */
endq = strchr(s + 1, q);
if (!endq) {
/* if the last char is not a quote,
* then we span lines */
size_t abuflen;
char *abuf;
abuf = NULL;
while (getline(&abuf, &abuflen, fp) != -1) {
line++;
buf = xrealloc(buf, buflen + abuflen);
endq = strchr(abuf, q);
if (endq)
*endq = '\0';
strcat(buf, abuf);
buflen += abuflen;
if (endq)
break;
}
free(abuf);
if (!endq)
warn("%s:%zu: %s: quote mismatch",
file, line, vars[i].name);
s = buf + vars[i].name_len + 2;
} else {
*endq = '\0';
s++;
}
} else {
/* no quotes, so chop the spacing/comments ourselves */
size_t off = strcspn(s, "# \t\n");
s[off] = '\0';
}
snprintf(npath, sizeof(npath), "%s:%zu:%zu-%zu",
file, curline, cbeg, cend);
set_portage_env_var(&vars[i], s, npath);
}
} else if (type == PMASK_FILE) {
if (*buf == '-') {
/* negation/removal, lookup and drop mask if it exists;
* note that this only supports exact matches (PMS
* 5.2.5) so we don't even have to parse and use
* atom-compare here */
if ((p = del_set(buf + 1, masks, NULL)) != NULL)
free(p);
} else {
void *e;
snprintf(npath, sizeof(npath), "%s:%zu:%zu-%zu",
file, line, cbeg, cend);
/* if not necessary, but do it for static code analysers
* which take into accound that add_set_value might
* allocate a new set when masks would be NULL -- a case
* which would never happen */
if (masks != NULL) {
p = xstrdup(npath);
add_set_value(buf, p, &e, masks);
if (e != NULL)
free(p);
}
}
}
}
fclose(fp);
done:
free(buf);
if (getenv("DEBUG"))
fprintf(stderr, "read profile %s%s\n", portroot, file);
}
/* Helper to check if a string starts with a prefix. If so, returns
* true and gets the length of the prefix. Otherwise returns false,
* leaving the prefix length unmodified. */
static bool
starts_with(const char *str, const char *prefix, size_t *prefix_len)
{
const char *s;
const char *p;
size_t len;
if (prefix == NULL) {
/* every string starts with a null string */
if (prefix_len != NULL)
*prefix_len = 0;
return true;
}
if (str == NULL)
/* null string only starts with a null string, and prefix isn't null */
return false;
len = 0;
for (s = str, p = prefix; *s != '\0' && *p != '\0'; ++s, ++p, ++len) {
if (*s != *p)
return false;
}
if (*p == '\0') {
if (prefix_len != NULL)
*prefix_len = len;
return true;
}
return false;
}
/* Helper to figure out inside of which overlay a path is. Returns
* null if nonesuch is found. */
static const char *
overlay_from_path (const char *path)
{
size_t n;
char *overlay;
size_t max_match = 0;
const char *found_overlay = NULL;
array_for_each(overlays, n, overlay) {
size_t overlay_len;
if (!starts_with(path, overlay, &overlay_len))
continue;
if (overlay_len <= max_match)
continue;
max_match = overlay_len;
found_overlay = overlay;
}
return found_overlay;
}
/* Helper to recursively read stacked make.defaults in profiles */
static void
read_portage_profile(const char *profile, env_vars vars[], set *masks)
{
char profile_file[_Q_PATH_MAX * 3];
char rpath[_Q_PATH_MAX];
size_t profile_len;
char *s;
char *p;
char *buf = NULL;
size_t buf_len = 0;
char *saveptr;
/* create mutable/appendable copy */
profile_len = snprintf(profile_file, sizeof(profile_file), "%s/", profile);
/* check if we have enough space (should always be the case) */
if (sizeof(profile_file) - profile_len < sizeof("make.defaults"))
return;
/* first walk all the parents, PMS 5.2.1 defines that it should
* treat parent profiles as defaults, that can be overridden by
* *this* profile. */
strcpy(profile_file + profile_len, "parent");
if (eat_file(profile_file, &buf, &buf_len)) {
s = strtok_r(buf, "\n", &saveptr);
for (; s != NULL; s = strtok_r(NULL, "\n", &saveptr)) {
/* handle repo: notation (not in PMS, referenced in Wiki only?) */
if ((p = strchr(s, ':')) != NULL) {
char *overlay;
char *repo_name;
size_t n;
/* split repo from target */
*p++ = '\0';
if (s[0] == '\0') {
/* empty repo name means a repo where the profile is */
const char* current_overlay = overlay_from_path (profile);
if (current_overlay == NULL) {
/* bring back the colon to see the ignored
* parent line */
*(--p) = ':';
if (!quiet)
warn("could not figure out current repo "
"of profile %s, ignoring parent %s",
profile, s);
continue;
}
snprintf(profile_file, sizeof(profile_file),
"%s/profiles/%s", current_overlay, p);
} else {
/* match the repo */
repo_name = NULL;
array_for_each(overlays, n, overlay) {
repo_name = xarrayget(overlay_names, n);
if (strcmp(repo_name, s) == 0) {
snprintf(profile_file, sizeof(profile_file),
"%s/profiles/%s/", overlay, p);
break;
}
repo_name = NULL;
}
if (repo_name == NULL) {
/* bring back the colon to see the ignored
* parent line */
*(--p) = ':';
if (!quiet)
warn("ignoring parent with unknown repo "
"in profile %s: %s", profile, s);
continue;
}
}
} else {
snprintf(profile_file + profile_len,
sizeof(profile_file) - profile_len, "%s", s);
}
read_portage_profile(
realpath(profile_file, rpath) == NULL ?
profile_file : rpath, vars, masks);
/* restore original path in case we were repointed by profile */
if (p != NULL)
snprintf(profile_file, sizeof(profile_file), "%s/", profile);
}
}
if (buf != NULL)
free(buf);
/* now consume *this* profile's make.defaults and package.mask */
strcpy(profile_file + profile_len, "make.defaults");
read_portage_file(profile_file, ENV_FILE, vars);
strcpy(profile_file + profile_len, "package.mask");
read_portage_file(profile_file, PMASK_FILE, masks);
}
env_vars vars_to_read[] = {
#define _Q_EV(t, V, set, lset, d) \
{ \
.name = #V, \
.name_len = sizeof(#V) - 1, \
.type = _Q_##t, \
set, \
lset, \
.default_value = d, \
.src = NULL, \
},
#define _Q_EVS(t, V, v, D) \
_Q_EV(t, V, .value.s = &v, .value_len = sizeof(D) - 1, D)
#define _Q_EVB(t, V, v, D) \
_Q_EV(t, V, .value.b = &v, .value_len = 0, D)
#define _Q_EVT(T, V, v, D) \
_Q_EV(T, V, .value.t = &v, .value_len = 0, D)
_Q_EVS(STR, ROOT, portroot, "/")
_Q_EVS(STR, ACCEPT_LICENSE, accept_license, "")
_Q_EVS(ISTR, INSTALL_MASK, install_mask, "")
_Q_EVS(ISTR, PKG_INSTALL_MASK, pkg_install_mask, "")
_Q_EVS(STR, ARCH, portarch, "")
_Q_EVS(ISTR, CONFIG_PROTECT, config_protect, "/etc")
_Q_EVS(ISTR, CONFIG_PROTECT_MASK, config_protect_mask, "")
_Q_EVB(BOOL, NOCOLOR, nocolor, 0)
_Q_EVT(ISET, FEATURES, features, NULL)
_Q_EVT(ISET, USE, ev_use, NULL)
_Q_EVS(STR, EPREFIX, eprefix, CONFIG_EPREFIX)
_Q_EVS(STR, EMERGE_LOG_DIR, portlogdir, CONFIG_EPREFIX "var/log")
_Q_EVS(STR, PORTDIR, main_overlay, CONFIG_EPREFIX "var/db/repos/gentoo")
_Q_EVS(STR, PORTAGE_BINHOST, binhost, DEFAULT_PORTAGE_BINHOST)
_Q_EVS(STR, PORTAGE_TMPDIR, port_tmpdir, CONFIG_EPREFIX "var/tmp/portage/")
_Q_EVS(STR, PKGDIR, pkgdir, CONFIG_EPREFIX "var/cache/binpkgs/")
_Q_EVS(STR, Q_VDB, portvdb, CONFIG_EPREFIX "var/db/pkg")
_Q_EVS(STR, Q_EDB, portedb, CONFIG_EPREFIX "var/cache/edb")
{ NULL, 0, _Q_BOOL, { NULL }, 0, NULL, NULL, }
#undef _Q_EV
#undef _Q_EVS
#undef _Q_EVB
};
set *package_masks = NULL;
/* Handle a single file in the repos.conf format. */
static void
read_one_repos_conf(const char *repos_conf, char **primary)
{
char rrepo[_Q_PATH_MAX];
char *main_repo;
char *repo;
char *buf = NULL;
size_t buf_len = 0;
char *s = NULL; /* pacify compiler */
char *p;
char *q;
char *r;
char *e;
bool do_trim;
bool is_default;
if (getenv("DEBUG"))
fprintf(stderr, " parse %s\n", repos_conf);
if (!eat_file(repos_conf, &buf, &buf_len)) {
if (buf != NULL)
free(buf);
return;
}
main_repo = NULL;
repo = NULL;
for (p = strtok_r(buf, "\n", &s); p != NULL; p = strtok_r(NULL, "\n", &s))
{
/* trim trailing whitespace, remove comments, locate =, walking
* backwards to the front of the string */
do_trim = true;
e = NULL;
for (r = q = s - 2; q >= p; q--) {
if (do_trim && isspace((int)*q)) {
*q = '\0';
r = q - 1;
} else if (*q == '#') {
do_trim = true;
*q = '\0';
e = NULL;
r = q - 1;
} else {
if (*q == '=')
e = q;
do_trim = false;
}
}
/* make q point to the last char */
q = r;
if (*p == '[' && *q == ']') { /* section header */
repo = p + 1;
*q = '\0';
is_default = strcmp(repo, "DEFAULT") == 0;
continue;
} else if (*p == '\0') { /* empty line */
continue;
} else if (e == NULL) { /* missing = */
continue;
} else if (repo == NULL) { /* not in a section */
continue;
}
/* trim off whitespace before = */
for (r = e - 1; r >= p && isspace((int)*r); r--)
*r = '\0';
/* and after the = */
for (*e++ = '\0'; e < q && isspace((int)*e); e++)
;
if (is_default && strcmp(p, "main-repo") == 0) {
main_repo = e;
} else if (!is_default && strcmp(p, "location") == 0) {
void *ele;
size_t n;
char *overlay;
char rootovrl[_Q_PATH_MAX];
/* try not to get confused by symlinks etc. */
snprintf(rootovrl, sizeof(rootovrl), "%s%s", portroot, e);
n = strlen(portroot);
if (realpath(rootovrl, rrepo) != NULL &&
strncmp(rrepo, portroot, n) == 0)
e = rrepo + n;
else
e = rootovrl + n;
array_for_each(overlay_names, n, overlay) {
if (strcmp(overlay, repo) == 0)
break;
overlay = NULL;
}
if (overlay != NULL) {
/* replace overlay */
ele = array_get_elem(overlay_src, n);
free(ele);
array_get_elem(overlay_src, n) = xstrdup(repos_conf);
ele = array_get_elem(overlays, n);
free(ele);
ele = array_get_elem(overlays, n) = xstrdup(e);
} else {
ele = xarraypush_str(overlays, e);
overlay = xarraypush_str(overlay_names, repo);
xarraypush_str(overlay_src, repos_conf);
}
if (main_repo && strcmp(repo, main_repo) == 0)
*primary = overlay;
}
}
free(buf);
}
/* Handle a possible directory of files. */
static void
read_repos_conf(const char *configroot, const char *repos_conf, char **primary)
{
char *top_conf, *sub_conf;
int i, count;
struct dirent **confs;
xasprintf(&top_conf, "%s%s%s", portroot, configroot, repos_conf);
if (getenv("DEBUG"))
fprintf(stderr, "repos.conf.d scanner %s\n", top_conf);
count = scandir(top_conf, &confs, NULL, alphasort);
if (count == -1) {
if (errno == ENOTDIR)
read_one_repos_conf(top_conf, primary);
} else {
for (i = 0; i < count; ++i) {
const char *name = confs[i]->d_name;
if (name[0] == '.' || name[0] == '\0')
continue;
/* Exclude backup files (aka files with ~ as postfix). */
if (name[strlen(name) - 1] == '~')
continue;
#ifdef DT_UNKNOWN
if (confs[i]->d_type != DT_UNKNOWN &&
confs[i]->d_type != DT_REG &&
confs[i]->d_type != DT_LNK)
continue;
#endif
xasprintf(&sub_conf, "%s/%s", top_conf, name);
#ifdef DT_UNKNOWN
if (confs[i]->d_type != DT_REG)
#endif
{
struct stat st;
if (stat(sub_conf, &st) || !S_ISREG(st.st_mode)) {
free(sub_conf);
continue;
}
}
read_one_repos_conf(sub_conf, primary);
free(sub_conf);
}
scandir_free(confs, count);
}
free(top_conf);
}
static void
initialize_portage_env(void)
{
size_t i;
const char *s;
env_vars *var;
char pathbuf[_Q_PATH_MAX];
char rpathbuf[_Q_PATH_MAX];
const char *configroot = getenv("PORTAGE_CONFIGROOT");
char *primary_overlay = NULL;
package_masks = create_set();
/* figure out where to find our config files */
if (!configroot)
configroot = CONFIG_EPREFIX;
/* rstrip /-es */
i = strlen(configroot);
while (i > 0 && configroot[i - 1] == '/')
i--;
/* read overlays first so we can resolve repo references in profile