[pacman-dev] [PATCH 5/5] Add QNX operating system specific implementations to libalpm and pacman.
Will Miles
wmiles at sgl.com
Thu Feb 26 22:04:13 UTC 2015
Signed-off-by: Will Miles <wmiles at sgl.com>
---
lib/libalpm/diskspace.c | 38 +++++++++++++++++++++++++++
lib/libalpm/trans.c | 37 +++++++++++++++++++++++++++
lib/libalpm/util.c | 68 +++++++++++++++++++++++++++++++++++++++++++++++++
src/pacman/pacman.c | 4 +++
4 files changed, 147 insertions(+)
diff --git a/lib/libalpm/diskspace.c b/lib/libalpm/diskspace.c
index 3b496c2..5142d05 100644
--- a/lib/libalpm/diskspace.c
+++ b/lib/libalpm/diskspace.c
@@ -119,6 +119,44 @@ static alpm_list_t *mount_point_list(alpm_handle_t *handle)
}
endmntent(fp);
+#elif defined(__QNX__)
+ /* QNX */
+ /* This is done the long way via a system command */
+ /* TODO: use the /proc calls directly */
+ char buffer[_POSIX_PATH_MAX];
+ FILE *cmd = popen("mount | cut -d ' ' -f 3", "r");
+
+ if (cmd == NULL) {
+ _alpm_log(handle, ALPM_LOG_WARNING, "Failed to get mount list: %s", strerror(errno));
+ return NULL;
+ }
+
+ memset(buffer, '\0', _POSIX_PATH_MAX);
+
+ while (fgets(buffer, _POSIX_PATH_MAX-1, cmd)) {
+ struct statvfs fsp;
+
+ /* eat trailing newline */
+ buffer[strlen(buffer) - 1] = '\0';
+
+ if(statvfs(buffer, &fsp) != 0) {
+ _alpm_log(handle, ALPM_LOG_WARNING,
+ _("could not get filesystem information for %s: %s\n"),
+ buffer, strerror(errno));
+ continue;
+ }
+
+
+ CALLOC(mp, 1, sizeof(alpm_mountpoint_t), RET_ERR(handle, ALPM_ERR_MEMORY, NULL));
+ mp->mount_dir = strdup(buffer);
+ mp->mount_dir_len = strlen(mp->mount_dir);
+ memcpy(&(mp->fsp), &fsp, sizeof(struct statvfs));
+ mp->read_only = fsp.f_flag & ST_RDONLY;
+
+ mount_points = alpm_list_add(mount_points, mp);
+ }
+
+ pclose(cmd);
#elif defined(HAVE_GETMNTENT) && defined(HAVE_MNTTAB_H)
/* Solaris, Illumos */
struct mnttab mnt;
diff --git a/lib/libalpm/trans.c b/lib/libalpm/trans.c
index 6a26e75..1c8196c 100644
--- a/lib/libalpm/trans.c
+++ b/lib/libalpm/trans.c
@@ -41,6 +41,43 @@
#include "alpm.h"
#include "deps.h"
+#ifdef __QNX__
+/* supply a workaround implementation of mkdtemp as the system does not */
+static char *mkdtemp(char *templateName)
+{
+ static const char letters[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+
+ const int length = strlen(templateName);
+
+ char *XXXXXX = templateName + length - 6;
+
+ if ((length < 6) || strncmp(XXXXXX, "XXXXXX", 6))
+ return 0;
+
+ for (int i = 0; i < 256; ++i) {
+ int v = rand();
+
+ /* Fill in the random bits. */
+ XXXXXX[0] = letters[v % 62];
+ v /= 62;
+ XXXXXX[1] = letters[v % 62];
+ v /= 62;
+ XXXXXX[2] = letters[v % 62];
+ v /= 62;
+ XXXXXX[3] = letters[v % 62];
+ v /= 62;
+ XXXXXX[4] = letters[v % 62];
+ v /= 62;
+ XXXXXX[5] = letters[v % 62];
+
+ if (!mkdir(templateName, 0700))
+ return templateName;
+ }
+
+ return 0;
+}
+#endif
+
/** \addtogroup alpm_trans Transaction Functions
* @brief Functions to manipulate libalpm transactions
* @{
diff --git a/lib/libalpm/util.c b/lib/libalpm/util.c
index 4d85132..5e246df 100644
--- a/lib/libalpm/util.c
+++ b/lib/libalpm/util.c
@@ -89,6 +89,68 @@ char *strsep(char **str, const char *delims)
}
#endif
+#ifdef __QNX__
+/** QNX execv workaround
+ * On QNX, we must ensure that the loader is present and the pipe server is
+ * started in our chroot environment. This function ensures that these
+ * services are correctly set up and torn down.
+ */
+int qnx_execv(const char *cmd, char *const argv[])
+{
+ int result;
+ int linked_loader = 0;
+ int started_pipe_server = 0;
+ struct stat stat_tmp;
+
+ /* Check to see if the loader exists; if not, link it */
+ if (stat("/usr/lib/ldqnx.so.2", &stat_tmp) != 0) {
+ result = link("/lib/libc.so.3","/usr/lib/ldqnx.so.2");
+ if (result != 0) {
+ fprintf(stderr, _("call to link loader failed (%s)\n"), strerror(errno));
+ exit(1);
+ }
+ linked_loader = 1;
+ };
+
+ /* Check to see if the pipe server is running; if not, start it */
+ /* Be aware that this clones the pipe fds to the pipe server, ie it is not 'fully' daemonized */
+ /* This means that the pacman host process will hang until the pipe server is terminated. */
+ if (stat("/dev/pipe", &stat_tmp) != 0) {
+ started_pipe_server = spawnl(P_NOWAIT,"/sbin/pipe","pipe",NULL);
+ if (started_pipe_server == -1) {
+ fprintf(stderr, _("call to start pipe server failed (%s)\n"), strerror(errno));
+ if (linked_loader) {
+ unlink("/usr/lib/ldqnx.so.2");
+ };
+ exit(-1);
+ };
+ };
+
+ /* Run the program, collect the result */
+ result = spawnv(P_WAIT,cmd,argv);
+ if (result == -1) {
+ result = -errno;
+ } else {
+ result = WEXITSTATUS(result);
+ };
+
+ /* Clean up */
+ if (started_pipe_server) {
+ kill(started_pipe_server, SIGTERM);
+ };
+ if (linked_loader) {
+ unlink("/usr/lib/ldqnx.so.2");
+ };
+
+ if (result < 0) {
+ fprintf(stderr, _("call to spawnv failed (%s)\n"), strerror(-result));
+ exit(1);
+ } else {
+ exit(result);
+ };
+}
+#endif
+
int _alpm_makepath(const char *path)
{
return _alpm_makepath_mode(path, 0755);
@@ -557,10 +619,16 @@ int _alpm_run_chroot(alpm_handle_t *handle, const char *cmd, char *const argv[])
exit(1);
}
umask(0022);
+
+#ifdef __QNX__
+ /* never returns */
+ qnx_execv(cmd, argv);
+#else
execv(cmd, argv);
/* execv only returns if there was an error */
fprintf(stderr, _("call to execv failed (%s)\n"), strerror(errno));
exit(1);
+#endif
} else {
/* this code runs for the parent only (wait on the child) */
int status;
diff --git a/src/pacman/pacman.c b/src/pacman/pacman.c
index fce0131..a419416 100644
--- a/src/pacman/pacman.c
+++ b/src/pacman/pacman.c
@@ -1058,7 +1058,11 @@ int main(int argc, char *argv[])
/* Set up the structure to specify the new action. */
new_action.sa_handler = handler;
sigemptyset(&new_action.sa_mask);
+#ifdef __QNX__
+ new_action.sa_flags = 0;
+#else
new_action.sa_flags = SA_RESTART;
+#endif
/* assign our handler to any signals we care about */
for(i = 0; i < sizeof(signals) / sizeof(signals[0]); i++) {
--
2.3.0
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