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-rw-r--r--lib/libalpm/trans.c258
1 files changed, 256 insertions, 2 deletions
diff --git a/lib/libalpm/trans.c b/lib/libalpm/trans.c
index 87b8c1b6..cb873e7a 100644
--- a/lib/libalpm/trans.c
+++ b/lib/libalpm/trans.c
@@ -27,6 +27,15 @@
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
+#include <sys/wait.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/statvfs.h>
+#include <unistd.h>
+#include <errno.h>
+#ifndef __sun__
+#include <mntent.h>
+#endif
/* libalpm */
#include "trans.h"
@@ -364,8 +373,253 @@ int _alpm_trans_update_depends(pmtrans_t *trans, pmpkg_t *pkg)
return(0);
}
+/* A cheap grep for text files, returns 1 if a substring
+ * was found in the text file fn, 0 if it wasn't
+ */
+static int grep(const char *fn, const char *needle)
+{
+ FILE *fp;
+
+ if((fp = fopen(fn, "r")) == NULL) {
+ return(0);
+ }
+ while(!feof(fp)) {
+ char line[1024];
+ fgets(line, 1024, fp);
+ if(feof(fp)) {
+ continue;
+ }
+ if(strstr(line, needle)) {
+ fclose(fp);
+ return(1);
+ }
+ }
+ fclose(fp);
+ return(0);
+}
+
+int _alpm_runscriptlet(const char *root, const char *installfn,
+ const char *script, const char *ver,
+ const char *oldver, pmtrans_t *trans)
+{
+ char scriptfn[PATH_MAX];
+ char cmdline[PATH_MAX];
+ char tmpdir[PATH_MAX] = "";
+ char *scriptpath;
+ struct stat buf;
+ char cwd[PATH_MAX] = "";
+ pid_t pid;
+ int retval = 0;
+
+ ALPM_LOG_FUNC;
+
+ if(stat(installfn, &buf)) {
+ /* not found */
+ _alpm_log(PM_LOG_DEBUG, "scriptlet '%s' not found", installfn);
+ return(0);
+ }
+
+ if(!strcmp(script, "pre_upgrade") || !strcmp(script, "pre_install")) {
+ snprintf(tmpdir, PATH_MAX, "%stmp/", root);
+ if(stat(tmpdir, &buf)) {
+ _alpm_makepath(tmpdir);
+ }
+ snprintf(tmpdir, PATH_MAX, "%stmp/alpm_XXXXXX", root);
+ if(mkdtemp(tmpdir) == NULL) {
+ _alpm_log(PM_LOG_ERROR, _("could not create temp directory"));
+ return(1);
+ }
+ _alpm_unpack(installfn, tmpdir, ".INSTALL");
+ snprintf(scriptfn, PATH_MAX, "%s/.INSTALL", tmpdir);
+ /* chop off the root so we can find the tmpdir in the chroot */
+ scriptpath = scriptfn + strlen(root) - 1;
+ } else {
+ strncpy(scriptfn, installfn, PATH_MAX);
+ /* chop off the root so we can find the tmpdir in the chroot */
+ scriptpath = scriptfn + strlen(root) - 1;
+ }
+
+ if(!grep(scriptfn, script)) {
+ /* script not found in scriptlet file */
+ goto cleanup;
+ }
+
+ /* save the cwd so we can restore it later */
+ if(getcwd(cwd, PATH_MAX) == NULL) {
+ _alpm_log(PM_LOG_ERROR, _("could not get current working directory"));
+ /* in case of error, cwd content is undefined: so we set it to something */
+ cwd[0] = 0;
+ }
+
+ /* just in case our cwd was removed in the upgrade operation */
+ if(chdir(root) != 0) {
+ _alpm_log(PM_LOG_ERROR, _("could not change directory to %s (%s)"), root, strerror(errno));
+ goto cleanup;
+ }
+
+ _alpm_log(PM_LOG_DEBUG, _("executing %s script..."), script);
+
+ if(oldver) {
+ snprintf(cmdline, PATH_MAX, "source %s %s %s %s",
+ scriptpath, script, ver, oldver);
+ } else {
+ snprintf(cmdline, PATH_MAX, "source %s %s %s",
+ scriptpath, script, ver);
+ }
+ _alpm_log(PM_LOG_DEBUG, "%s", cmdline);
+
+ pid = fork();
+ if(pid == -1) {
+ _alpm_log(PM_LOG_ERROR, _("could not fork a new process (%s)"), strerror(errno));
+ retval = 1;
+ goto cleanup;
+ }
+
+ if(pid == 0) {
+ FILE *pp;
+ _alpm_log(PM_LOG_DEBUG, _("chrooting in %s"), root);
+ if(chroot(root) != 0) {
+ _alpm_log(PM_LOG_ERROR, _("could not change the root directory (%s)"), strerror(errno));
+ return(1);
+ }
+ if(chdir("/") != 0) {
+ _alpm_log(PM_LOG_ERROR, _("could not change directory to / (%s)"), strerror(errno));
+ return(1);
+ }
+ umask(0022);
+ _alpm_log(PM_LOG_DEBUG, _("executing \"%s\""), cmdline);
+ pp = popen(cmdline, "r");
+ if(!pp) {
+ _alpm_log(PM_LOG_ERROR, _("call to popen failed (%s)"), strerror(errno));
+ retval = 1;
+ goto cleanup;
+ }
+ while(!feof(pp)) {
+ char line[1024];
+ if(fgets(line, 1024, pp) == NULL)
+ break;
+ /*TODO clean this code up, remove weird SCRIPTLET_START/DONE,
+ * (void*)atol call, etc. */
+ /* "START <event desc>" */
+ if((strlen(line) > strlen(SCRIPTLET_START))
+ && !strncmp(line, SCRIPTLET_START, strlen(SCRIPTLET_START))) {
+ EVENT(trans, PM_TRANS_EVT_SCRIPTLET_START,
+ _alpm_strtrim(line + strlen(SCRIPTLET_START)), NULL);
+ /* "DONE <ret code>" */
+ } else if((strlen(line) > strlen(SCRIPTLET_DONE))
+ && !strncmp(line, SCRIPTLET_DONE, strlen(SCRIPTLET_DONE))) {
+ EVENT(trans, PM_TRANS_EVT_SCRIPTLET_DONE,
+ (void*)atol(_alpm_strtrim(line + strlen(SCRIPTLET_DONE))),
+ NULL);
+ } else {
+ _alpm_strtrim(line);
+ /* log our script output */
+ alpm_logaction(line);
+ EVENT(trans, PM_TRANS_EVT_SCRIPTLET_INFO, line, NULL);
+ }
+ }
+ pclose(pp);
+ exit(0);
+ } else {
+ if(waitpid(pid, 0, 0) == -1) {
+ _alpm_log(PM_LOG_ERROR, _("call to waitpid failed (%s)"),
+ strerror(errno));
+ retval = 1;
+ goto cleanup;
+ }
+ }
+
+cleanup:
+ if(strlen(tmpdir) && _alpm_rmrf(tmpdir)) {
+ _alpm_log(PM_LOG_WARNING, _("could not remove tmpdir %s"), tmpdir);
+ }
+ if(strlen(cwd)) {
+ chdir(cwd);
+ }
+
+ return(retval);
+}
+
+#ifndef __sun__
+static long long get_freespace()
+{
+ struct mntent *mnt;
+ const char *table = MOUNTED;
+ FILE *fp;
+ long long ret=0;
+
+ if((fp = setmntent(table, "r")) == NULL) {
+ _alpm_log(PM_LOG_ERROR, _("cannot read disk space information from %s: %s"),
+ table, strerror(errno));
+ return(-1);
+ }
+
+ while ((mnt = getmntent(fp)))
+ {
+ struct statvfs64 buf;
+
+ statvfs64(mnt->mnt_dir, &buf);
+ ret += buf.f_bavail * buf.f_bsize;
+ }
+
+ endmntent(fp);
+
+ return(ret);
+}
+
+int _alpm_check_freespace(pmtrans_t *trans, alpm_list_t **data)
+{
+ alpm_list_t *i;
+ long long pkgsize=0, freespace;
+
+ ALPM_LOG_FUNC;
+
+ for(i = trans->packages; i; i = i->next) {
+ if(trans->type == PM_TRANS_TYPE_SYNC)
+ {
+ pmsyncpkg_t *sync = i->data;
+ if(sync->type != PM_SYNC_TYPE_REPLACE) {
+ pmpkg_t *pkg = sync->pkg;
+ pkgsize += alpm_pkg_get_isize(pkg);
+ }
+ }
+ else
+ {
+ pmpkg_t *pkg = i->data;
+ pkgsize += alpm_pkg_get_size(pkg);
+ }
+ }
+ freespace = get_freespace();
+ _alpm_log(PM_LOG_DEBUG, _("check_freespace: total pkg size: %lld, disk space: %lld"), pkgsize, freespace);
+ if(pkgsize > freespace) {
+ if(data) {
+ long long *ptr;
+ if((ptr = (long long*)malloc(sizeof(long long)))==NULL) {
+ _alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(long long));
+ pm_errno = PM_ERR_MEMORY;
+ return(-1);
+ }
+ *ptr = pkgsize;
+ *data = alpm_list_add(*data, ptr);
+ if((ptr = (long long*)malloc(sizeof(long long)))==NULL) {
+ _alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(long long));
+ FREELIST(*data);
+ pm_errno = PM_ERR_MEMORY;
+ return(-1);
+ }
+ *ptr = freespace;
+ *data = alpm_list_add(*data, ptr);
+ }
+ pm_errno = PM_ERR_DISK_FULL;
+ return(-1);
+ }
+ else {
+ return(0);
+ }
+}
+#endif
-pmtranstype_t alpm_trans_get_type()
+pmtranstype_t SYMEXPORT alpm_trans_get_type()
{
/* Sanity checks */
ASSERT(handle != NULL, return(-1));
@@ -383,7 +637,7 @@ unsigned int SYMEXPORT alpm_trans_get_flags()
return handle->trans->flags;
}
-alpm_list_t * alpm_trans_get_targets()
+alpm_list_t SYMEXPORT * alpm_trans_get_targets()
{
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
generated by cgit v1.2.3-70-g09d2 (git 2.47.0) at 2024-11-15 06:08:38 +0000