71 lines
2 KiB
C
71 lines
2 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* exec_command.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: jschaft <cecile.schaft@orange.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/04/24 13:48:00 by jschaft #+# #+# */
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/* Updated: 2024/04/30 13:58:04 by mcolonna ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "include.h"
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// Free every element of tab, then tab itself.
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static void free_tab(char **tab)
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{
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int i;
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i = 0;
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while (tab[i] != NULL)
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{
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free(tab[i]);
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i++;
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}
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free(tab);
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}
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static void fork_exec(const char *path, t_call call, const int inout[2],
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char *const envp[])
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{
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dup2(inout[0], 0);
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dup2(inout[1], 1);
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execve(path, call.argv, envp);
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}
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static int execute_call(t_memclass mc, t_call call, const int inout[2],
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char *const envp[])
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{
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char **const path = get_path(envp);
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pid_t pid;
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const char *program_path;
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program_path = search_path(mc, (const char **)path, call.program);
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if (!program_path)
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return (127);
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pid = fork();
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if (pid < 0)
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return (1);
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if (pid == 0)
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fork_exec(program_path, call, inout, envp);
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free_tab(path);
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return (0);
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}
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// TODO works with only one call (no pipe).
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int execute_command(t_memclass mc, t_command command, char *const envp[])
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{
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const int inout[] = {command.input_fd, command.output_fd};
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int nb_calls;
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int r;
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nb_calls = 1;
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r = execute_call(mc, command.calls[0], inout, envp);
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while (nb_calls)
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{
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wait(NULL);
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nb_calls--;
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}
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return (r);
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}
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