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author | Rom Lemarchand <romlem@google.com> | 2013-01-29 11:44:59 -0800 |
---|---|---|
committer | Rom Lemarchand <romlem@google.com> | 2013-01-30 12:26:05 -0800 |
commit | 2a46bfa6b9401b847a3c0609e247428564d91121 (patch) | |
tree | 3996ef0c290e72951e54c42f8c61b1689ec9c608 | |
parent | 49f0f776932ec6120d41d8e144247f9d36a01fb5 (diff) | |
download | system_core-2a46bfa6b9401b847a3c0609e247428564d91121.zip system_core-2a46bfa6b9401b847a3c0609e247428564d91121.tar.gz system_core-2a46bfa6b9401b847a3c0609e247428564d91121.tar.bz2 |
logwrapper: rename logwrap() to android_fork_execvp()
Also change the quiet flag to a logwrap flag (inverses the meaning of
the boolean).
Change-Id: I76047a7b460f4c28d52f26bfe3f65889d96047f8
-rw-r--r-- | logwrapper/include/logwrap/logwrap.h | 6 | ||||
-rw-r--r-- | logwrapper/logwrap.c | 68 | ||||
-rw-r--r-- | logwrapper/logwrapper.c | 2 |
3 files changed, 36 insertions, 40 deletions
diff --git a/logwrapper/include/logwrap/logwrap.h b/logwrapper/include/logwrap/logwrap.h index 6597ef5..44523e3 100644 --- a/logwrapper/include/logwrap/logwrap.h +++ b/logwrapper/include/logwrap/logwrap.h @@ -42,15 +42,15 @@ __BEGIN_DECLS * SIGQUIT while logwrap is running. This may force the end-user to * send a signal twice to signal the caller (once for the child, and * once for the caller) - * quiet: when true, don't display log messages + * logwrap: when true, log messages from the child * * Return value: * 0 when logwrap successfully run the child process and captured its status * -1 when an internal error occurred * */ -int logwrap(int argc, char* argv[], int *status, bool ignore_int_quit, - bool quiet); +int android_fork_execvp(int argc, char* argv[], int *status, bool ignore_int_quit, + bool logwrap); __END_DECLS diff --git a/logwrapper/logwrap.c b/logwrapper/logwrap.c index 5af1671..a04097d 100644 --- a/logwrapper/logwrap.c +++ b/logwrapper/logwrap.c @@ -36,22 +36,20 @@ static int signal_fd_write; -#define ERROR(fmt, quiet, args...) \ +#define ERROR(fmt, args...) \ do { \ - if (!quiet) { \ - fprintf(stderr, fmt, ## args); \ - ALOG(LOG_ERROR, "logwrapper", fmt, ## args); \ - } \ + fprintf(stderr, fmt, ## args); \ + ALOG(LOG_ERROR, "logwrapper", fmt, ## args); \ } while(0) -#define FATAL_CHILD(fmt, quiet, args...) \ +#define FATAL_CHILD(fmt, args...) \ do { \ - ERROR(fmt, quiet, ## args); \ + ERROR(fmt, ## args); \ _exit(-1); \ } while(0) static int parent(const char *tag, int parent_read, int signal_fd, pid_t pid, - int *chld_sts, bool quiet) { + int *chld_sts, bool logwrap) { int status = 0; char buffer[4096]; struct pollfd poll_fds[] = { @@ -84,7 +82,7 @@ static int parent(const char *tag, int parent_read, int signal_fd, pid_t pid, if (poll(poll_fds, remote_hung ? 1 : 2, -1) < 0) { if (errno == EINTR) continue; - ERROR("poll failed\n", quiet); + ERROR("poll failed\n"); rc = -1; goto err_poll; } @@ -100,7 +98,7 @@ static int parent(const char *tag, int parent_read, int signal_fd, pid_t pid, buffer[b] = '\0'; } else if (buffer[b] == '\n') { buffer[b] = '\0'; - if (!quiet) + if (logwrap) ALOG(LOG_INFO, btag, "%s", &buffer[a]); a = b + 1; } @@ -109,7 +107,7 @@ static int parent(const char *tag, int parent_read, int signal_fd, pid_t pid, if (a == 0 && b == sizeof(buffer) - 1) { // buffer is full, flush buffer[b] = '\0'; - if (!quiet) + if (logwrap) ALOG(LOG_INFO, btag, "%s", &buffer[a]); b = 0; } else if (a != b) { @@ -149,22 +147,20 @@ static int parent(const char *tag, int parent_read, int signal_fd, pid_t pid, // Flush remaining data if (a != b) { buffer[b] = '\0'; - if (!quiet) + if (logwrap) ALOG(LOG_INFO, btag, "%s", &buffer[a]); } - if (!quiet) { - if (WIFEXITED(status)) { - if (WEXITSTATUS(status)) - ALOG(LOG_INFO, "logwrapper", "%s terminated by exit(%d)", btag, - WEXITSTATUS(status)); - } else if (WIFSIGNALED(status)) { - ALOG(LOG_INFO, "logwrapper", "%s terminated by signal %d", btag, - WTERMSIG(status)); - } else if (WIFSTOPPED(status)) { - ALOG(LOG_INFO, "logwrapper", "%s stopped by signal %d", btag, - WSTOPSIG(status)); - } + if (WIFEXITED(status)) { + if (WEXITSTATUS(status)) + ALOG(LOG_INFO, "logwrapper", "%s terminated by exit(%d)", btag, + WEXITSTATUS(status)); + } else if (WIFSIGNALED(status)) { + ALOG(LOG_INFO, "logwrapper", "%s terminated by signal %d", btag, + WTERMSIG(status)); + } else if (WIFSTOPPED(status)) { + ALOG(LOG_INFO, "logwrapper", "%s stopped by signal %d", btag, + WSTOPSIG(status)); } if (chld_sts != NULL) *chld_sts = status; @@ -173,24 +169,24 @@ err_poll: return rc; } -static void child(int argc, char* argv[], bool quiet) { +static void child(int argc, char* argv[], bool logwrap) { // create null terminated argv_child array char* argv_child[argc + 1]; memcpy(argv_child, argv, argc * sizeof(char *)); argv_child[argc] = NULL; if (execvp(argv_child[0], argv_child)) { - FATAL_CHILD("executing %s failed: %s\n", quiet, argv_child[0], + FATAL_CHILD("executing %s failed: %s\n", argv_child[0], strerror(errno)); } } -void sigchld_handler(int sig) { +static void sigchld_handler(int sig) { write(signal_fd_write, &sig, 1); } -int logwrap(int argc, char* argv[], int *status, bool ignore_int_quit, - bool quiet) { +int android_fork_execvp(int argc, char* argv[], int *status, bool ignore_int_quit, + bool logwrap) { pid_t pid; int parent_ptty; int child_ptty; @@ -207,14 +203,14 @@ int logwrap(int argc, char* argv[], int *status, bool ignore_int_quit, /* Use ptty instead of socketpair so that STDOUT is not buffered */ parent_ptty = open("/dev/ptmx", O_RDWR); if (parent_ptty < 0) { - ERROR("Cannot create parent ptty\n", quiet); + ERROR("Cannot create parent ptty\n"); rc = -1; goto err_open; } if (grantpt(parent_ptty) || unlockpt(parent_ptty) || ((child_devname = (char*)ptsname(parent_ptty)) == 0)) { - ERROR("Problem with /dev/ptmx\n", quiet); + ERROR("Problem with /dev/ptmx\n"); rc = -1; goto err_ptty; } @@ -227,7 +223,7 @@ int logwrap(int argc, char* argv[], int *status, bool ignore_int_quit, pid = fork(); if (pid < 0) { - ERROR("Failed to fork\n", quiet); + ERROR("Failed to fork\n"); rc = -1; goto err_fork; } else if (pid == 0) { @@ -236,7 +232,7 @@ int logwrap(int argc, char* argv[], int *status, bool ignore_int_quit, child_ptty = open(child_devname, O_RDWR); if (child_ptty < 0) { - FATAL_CHILD("Problem with child ptty\n", quiet); + FATAL_CHILD("Problem with child ptty\n"); return -1; } @@ -245,7 +241,7 @@ int logwrap(int argc, char* argv[], int *status, bool ignore_int_quit, dup2(child_ptty, 2); close(child_ptty); - child(argc, argv, quiet); + child(argc, argv, logwrap); } else { struct sigaction ignact; @@ -272,7 +268,7 @@ int logwrap(int argc, char* argv[], int *status, bool ignore_int_quit, rc = socketpair(AF_UNIX, SOCK_STREAM, 0, sockets); if (rc == -1) { - ERROR("socketpair failed: %s\n", quiet, strerror(errno)); + ERROR("socketpair failed: %s\n", strerror(errno)); goto err_socketpair; } @@ -283,7 +279,7 @@ int logwrap(int argc, char* argv[], int *status, bool ignore_int_quit, signal_fd_write = sockets[0]; - rc = parent(argv[0], parent_ptty, sockets[1], pid, status, quiet); + rc = parent(argv[0], parent_ptty, sockets[1], pid, status, logwrap); } close(sockets[0]); diff --git a/logwrapper/logwrapper.c b/logwrapper/logwrapper.c index cba69d9..ed71a29 100644 --- a/logwrapper/logwrapper.c +++ b/logwrapper/logwrapper.c @@ -59,7 +59,7 @@ int main(int argc, char* argv[]) { usage(); } - rc = logwrap(argc - 1, &argv[1], &status, true, false); + rc = android_fork_execvp(argc - 1, &argv[1], &status, true, true); if (!rc) { if (WIFEXITED(status)) rc = WEXITSTATUS(status); |