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#include "fs.h"
#include "files.h"
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <dirent.h>
#include <string>
#include <vector>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>
#include <host/CopyFile.h>
using namespace std;
static bool
is_dir(const string& path)
{
int err;
struct stat st;
err = stat(path.c_str(), &st);
return err != 0 || S_ISDIR(st.st_mode);
}
static int
remove_file(const string& path)
{
int err = unlink(path.c_str());
if (err != 0) {
fprintf(stderr, "error deleting file %s (%s)\n", path.c_str(),
strerror(errno));
return errno;
}
return 0;
}
int
remove_recursively(const string& path)
{
int err;
if (is_dir(path)) {
DIR *d = opendir(path.c_str());
if (d == NULL) {
fprintf(stderr, "error getting directory contents %s (%s)\n",
path.c_str(), strerror(errno));
return errno;
}
vector<string> files;
vector<string> dirs;
struct dirent *ent;
while (NULL != (ent = readdir(d))) {
if (0 == strcmp(".", ent->d_name)
|| 0 == strcmp("..", ent->d_name)) {
continue;
}
string full = path;
full += '/';
full += ent->d_name;
bool is_directory = (ent->d_type == DT_DIR);
if (is_directory) {
dirs.push_back(full);
} else {
files.push_back(full);
}
}
closedir(d);
for (vector<string>::iterator it=files.begin(); it!=files.end(); it++) {
err = remove_file(*it);
if (err != 0) {
return err;
}
}
for (vector<string>::iterator it=dirs.begin(); it!=dirs.end(); it++) {
err = remove_recursively(*it);
if (err != 0) {
return err;
}
}
err = rmdir(path.c_str());
if (err != 0) {
fprintf(stderr, "error deleting directory %s (%s)\n", path.c_str(),
strerror(errno));
return errno;
}
return 0;
} else {
return remove_file(path);
}
}
int
mkdir_recursively(const string& path)
{
int err;
size_t pos = 0;
// For absolute pathnames, that starts with leading '/'
// use appropriate initial value.
if (path.length() != 0 and path[0] == '/') pos++;
while (true) {
pos = path.find('/', pos);
string p = path.substr(0, pos);
struct stat st;
err = stat(p.c_str(), &st);
if (err != 0) {
err = mkdir(p.c_str(), 0770);
if (err != 0) {
fprintf(stderr, "can't create directory %s (%s)\n",
path.c_str(), strerror(errno));
return errno;
}
}
else if (!S_ISDIR(st.st_mode)) {
fprintf(stderr, "can't create directory %s because %s is a file.\n",
path.c_str(), p.c_str());
return 1;
}
pos++;
if (p == path) {
return 0;
}
}
}
int
copy_file(const string& src, const string& dst)
{
int err;
err = copyFile(src.c_str(), dst.c_str(),
COPY_NO_DEREFERENCE | COPY_FORCE | COPY_PERMISSIONS);
return err;
}
int
strip_file(const string& path)
{
// Default strip command to run is "strip" unless overridden by the ATREE_STRIP env var.
const char* strip_cmd = getenv("ATREE_STRIP");
if (!strip_cmd || !strip_cmd[0]) {
strip_cmd = "strip";
}
pid_t pid = fork();
if (pid == -1) {
// Fork failed. errno should be set.
return -1;
} else if (pid == 0) {
// Exec in the child. Only returns if execve failed.
int num_args = 0;
const char *s = strip_cmd;
while (*s) {
while (*s == ' ') ++s;
if (*s && *s != ' ') {
++num_args;
while (*s && *s != ' ') ++s;
}
}
if (num_args <= 0) {
fprintf(stderr, "Invalid ATREE_STRIP command '%s'\n", strip_cmd);
return 1;
} else if (num_args == 1) {
return execlp(strip_cmd, strip_cmd, path.c_str(), (char *)NULL);
} else {
// Split the arguments if more than 1
char* cmd = strdup(strip_cmd);
const char** args = (const char**) malloc(sizeof(const char*) * (num_args + 2));
const char** curr = args;
char* s = cmd;
while (*s) {
while (*s == ' ') ++s;
if (*s && *s != ' ') {
*curr = s;
++curr;
while (*s && *s != ' ') ++s;
if (*s) {
*s = '\0';
++s;
}
}
}
args[num_args] = path.c_str();
args[num_args + 1] = NULL;
int ret = execvp(args[0], (char* const*)args);
free(args);
free(cmd);
return ret;
}
} else {
// Wait for child pid and return its exit code.
int status;
waitpid(pid, &status, 0);
return status;
}
}
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