libalpm compliant programs now support running pre-commit and post-commit
hooks. Currently, the implementation is as simple as I can make it --
if /etc/pacman.d/hooks.d/transact.sh exists, it will be run with the
'pre-commit' parameter just before a transaction is committed, and it will
be run with 'post-commit' after the transaction has been completed.
The intent is for transact.sh to be a wrapper that calls scripts in
/etc/pacman.d/hooks.d/transact.d with the arg it is passed, but since this
is just for a demo I did not actually include any of that.
I also didn't bother adhering to any of the coding standards, as that will
be easy enough to fix up once we have something a bit more fleshed out.
---
lib/libalpm/hooks.c | 28 ++++++++++++++++++++++++++++
lib/libalpm/hooks.h | 4 ++++
lib/libalpm/trans.c | 4 +++-
3 files changed, 35 insertions(+), 1 deletions(-)
diff --git a/lib/libalpm/hooks.c b/lib/libalpm/hooks.c
index 9630c70..5982ea5 100644
--- a/lib/libalpm/hooks.c
+++ b/lib/libalpm/hooks.c
@@ -30,6 +30,7 @@
#include
#include
#include
+#include
#include
/* libalpm */
@@ -46,3 +47,30 @@
#include "alpm.h"
#include "deps.h"
#include "cache.h"
+
+int alpm_hook_transact(char* phase) {
+ char filename[PATH_MAX];
+ struct stat sbuf;
+ pid_t childpid, retpid;
+ int status;
+ /* ignore transaction hooks when targeting another root filesystem
+ if (!strcmp(handle->root,"/"))
+ return 1;*/
+ snprintf(filename,PATH_MAX,"%s/transact.sh",ALPM_HOOKS_DIR);
+ /* if we cannot stat transact.sh, just return */
+ if (stat(filename,&sbuf) != 0)
+ return 1;
+ fflush(NULL);
+ childpid=fork();
+ if (childpid == -1) {
+ return 1;
+ } else if (childpid == 0) {
+ execl(filename,"transact.sh",phase,(char *)0);
+ } else {
+ /* return the exit status of the transact.sh program. */
+ do {
+ retpid = waitpid(childpid,&status,0);
+ } while (!WIFEXITED(status) && !WIFSIGNALED(status));
+ }
+ return !WEXITSTATUS(status);
+}
diff --git a/lib/libalpm/hooks.h b/lib/libalpm/hooks.h
index d60b1f4..f79d2c4 100644
--- a/lib/libalpm/hooks.h
+++ b/lib/libalpm/hooks.h
@@ -25,4 +25,8 @@
#include "alpm.h"
+#define ALPM_HOOKS_DIR "/etc/pacman.d/hooks.d"
+
+int alpm_hook_transact(char*);
+
#endif /*ALPM_HOOKS_H */
diff --git a/lib/libalpm/trans.c b/lib/libalpm/trans.c
index 523f33b..ed26aa6 100644
--- a/lib/libalpm/trans.c
+++ b/lib/libalpm/trans.c
@@ -195,7 +195,8 @@ int SYMEXPORT alpm_trans_commit(alpm_list_t **data)
if(trans->add == NULL && trans->remove == NULL) {
return(0);
}
-
+ if (! alpm_hook_transact("pre-commit"))
+ return (-1);
trans->state = STATE_COMMITING;
if(trans->add == NULL) {
@@ -211,6 +212,7 @@ int SYMEXPORT alpm_trans_commit(alpm_list_t **data)
}
trans->state = STATE_COMMITED;
+ alpm_hook_transact("post-commit");
return(0);
}
--
1.7.1.1