61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
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#include "command.h"
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#include "memory.h"
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#include "discovery.h"
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#include "io.h"
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#include "utils.h"
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#include "config.h"
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#include <assert.h>
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#include <unistd.h>
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#include <sys/wait.h>
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// TODO: This file is UNSAFE. This file is purely here for MVP purposes, and to self-host this program itself.
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Command command_create(Arena* a, Discovery* d, Configuration* c)
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{
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assert(d != NULL);
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assert(a != NULL);
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assert(c != NULL);
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Command cmd;
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cmd.a = a;
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cmd.app = d->cc;
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size_t args_len = d->c_count + 2;
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const char** args_buf = (const char**)arena_alloc(a, sizeof(const char*) * (args_len));
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args_buf[0] = d->cc.buf;
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for(size_t i = 0; i < d->c_count; i++)
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{
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args_buf[i+1] = d->c_files[i]->path.buf;
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LOG_DEBUG("File to build: %s", d->c_files[i]->path);
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}
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args_buf[args_len - 1] = NULL;
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cmd.args = args_buf;
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return cmd;
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}
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int command_run(Command* cmd)
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{
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assert(cmd != NULL);
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if(cmd->args == NULL) DIE("No arguments were supplied to the command");
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pid_t pid = fork();
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if(pid == -1) DIE("fork failed, could not create child process.");
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if(pid == 0)
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{
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if(execvp(cmd->app.buf, (char*const*)cmd->args) == -1)
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DIE("Failed to launch command: %s.", cmd->app.buf);
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}
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int wstatus = 0;
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if(waitpid(pid, &wstatus, 0) == -1) DIE("wait failed.");
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LOG_DEBUG("Command calling app %s exited with status code %d on child process PID %d.", cmd->app.buf, wstatus, pid);
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return wstatus;
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}
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