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Update exec functions signatures

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This commit is contained in:
topjohnwu
2018-11-26 03:06:43 -05:00
parent b01a8cace6
commit 731455f164
4 changed files with 17 additions and 18 deletions
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4
native/jni/utils/include/utils.h
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@@ -91,8 +91,8 @@ unsigned get_system_uid();
unsigned get_radio_uid();
ssize_t fdgets(char *buf, size_t size, int fd);
int is_num(const char *s);
int exec_array(int err, int *fd, void (*cb)(void), const char *argv[]);
int exec_command(int err, int *fd, void (*cb)(void), const char *argv0, ...);
int exec_array(bool err, int *fd, void (*cb)(void), const char **argv);
int exec_command(bool err, int *fd, void (*cb)(void), const char *argv0, ...);
int exec_command_sync(const char *argv0, ...);
int fork_dont_care();
void gen_rand_str(char *buf, int len);

20
native/jni/utils/misc.cpp
View File

@@ -181,21 +181,21 @@ int __fsetxattr(int fd, const char *name, const void *value, size_t size, int fl
}
/*
fd == NULL -> Ignore output
fd == nullptr -> Ignore output
*fd < 0 -> Open pipe and set *fd to the read end
*fd >= 0 -> STDOUT (or STDERR) will be redirected to *fd
*cb -> A callback function which calls after forking
*/
int exec_array(int err, int *fd, void (*cb)(void), const char *argv[]) {
int pipefd[2], write_end = -1;
int exec_array(bool err, int *fd, void (*cb)(void), const char **argv) {
int pipefd[2], outfd = -1;
if (fd) {
if (*fd < 0) {
if (xpipe2(pipefd, O_CLOEXEC) == -1)
return -1;
write_end = pipefd[1];
outfd = pipefd[1];
} else {
write_end = *fd;
outfd = *fd;
}
}
@@ -210,9 +210,9 @@ int exec_array(int err, int *fd, void (*cb)(void), const char *argv[]) {
}
if (fd) {
xdup2(write_end, STDOUT_FILENO);
xdup2(outfd, STDOUT_FILENO);
if (err)
xdup2(write_end, STDERR_FILENO);
xdup2(outfd, STDERR_FILENO);
}
// Setup environment
@@ -224,7 +224,7 @@ int exec_array(int err, int *fd, void (*cb)(void), const char *argv[]) {
return -1;
}
static int v_exec_command(int err, int *fd, void (*cb)(void), const char *argv0, va_list argv) {
static int v_exec_command(bool err, int *fd, void (*cb)(void), const char *argv0, va_list argv) {
// Collect va_list into vector
Vector<const char *> args;
args.push_back(argv0);
@@ -239,7 +239,7 @@ int exec_command_sync(const char *argv0, ...) {
va_list argv;
va_start(argv, argv0);
int pid, status;
pid = v_exec_command(0, NULL, NULL, argv0, argv);
pid = v_exec_command(false, nullptr, nullptr, argv0, argv);
va_end(argv);
if (pid < 0)
return pid;
@@ -247,7 +247,7 @@ int exec_command_sync(const char *argv0, ...) {
return WEXITSTATUS(status);
}
int exec_command(int err, int *fd, void (*cb)(void), const char *argv0, ...) {
int exec_command(bool err, int *fd, void (*cb)(void), const char *argv0, ...) {
va_list argv;
va_start(argv, argv0);
int pid = v_exec_command(err, fd, cb, argv0, argv);