mail(1): Bring some fixes from other BSDs.
- Use varargs properly - Use pid_t - Better handling of error conditions on forked jobs. - Some prototype and warning cleanups. Obtained from: NetBSD (some originaly from OpenBSD)
This commit is contained in:
pfg
parent
41b594a6e0
commit
6c5ab8a438
@ -439,7 +439,7 @@ folders(void)
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}
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if ((cmd = value("LISTER")) == NULL)
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cmd = "ls";
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(void)run_command(cmd, 0, -1, -1, dirname, NULL, NULL);
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(void)run_command(cmd, 0, -1, -1, dirname, NULL);
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return (0);
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}
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@ -130,8 +130,9 @@ next(int *msgvec)
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* so we can discard when the user quits.
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*/
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int
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save(char str[])
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save(void *v)
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{
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char *str = v;
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return (save1(str, 1, "save", saveignore));
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}
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@ -140,8 +141,9 @@ save(char str[])
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* Copy a message to a file without affected its saved-ness
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*/
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int
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copycmd(char str[])
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copycmd(void *v)
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{
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char *str = v;
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return (save1(str, 0, "copy", saveignore));
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}
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@ -79,7 +79,7 @@ dosh(char *str __unused)
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if ((sh = value("SHELL")) == NULL)
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sh = _PATH_CSHELL;
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(void)run_command(sh, 0, -1, -1, NULL, NULL, NULL);
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(void)run_command(sh, 0, -1, -1, NULL);
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(void)signal(SIGINT, sigint);
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printf("\n");
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return (0);
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@ -102,7 +102,7 @@ bangexp(char *str, size_t strsize)
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n = sizeof(bangbuf);
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while (*cp != '\0') {
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if (*cp == '!') {
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if (n < strlen(lastbang)) {
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if (n < (int)strlen(lastbang)) {
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overf:
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printf("Command buffer overflow\n");
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return (-1);
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@ -180,7 +180,7 @@ run_editor(FILE *fp, off_t size, int type, int readonly)
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nf = NULL;
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if ((edit = value(type == 'e' ? "EDITOR" : "VISUAL")) == NULL)
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edit = type == 'e' ? _PATH_EX : _PATH_VI;
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if (run_command(edit, 0, -1, -1, tempname, NULL, NULL) < 0) {
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if (run_command(edit, 0, -1, -1, tempname, NULL) < 0) {
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(void)rm(tempname);
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goto out;
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}
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@ -49,7 +49,7 @@ char *copyin(char *, char **);
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char *detract(struct name *, int);
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char *expand(char *);
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char *getdeadletter(void);
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char *getname(int);
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char *getname(uid_t);
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char *hfield(const char *, struct message *);
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FILE *infix(struct header *, FILE *);
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char *ishfield(char [], char *, const char *);
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@ -95,7 +95,7 @@ void collhup(int);
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void collint(int);
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void collstop(int);
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void commands(void);
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int copycmd(char []);
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int copycmd(void *v);
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int core(void);
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int count(struct name *);
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int delete(int []);
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@ -130,7 +130,7 @@ int getfold(char *, int);
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int gethfield(FILE *, char [], int, char **);
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int getmsglist(char *, int *, int);
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int getrawlist(char [], char **, int);
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int getuserid(char []);
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uid_t getuserid(char []);
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int grabh(struct header *, int);
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int group(char **);
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void hangup(int);
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@ -198,8 +198,8 @@ int respond(int *);
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int retfield(char *[]);
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int rexit(int);
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int rm(char *);
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int run_command(char *, sigset_t *, int, int, char *, char *, char *);
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int save(char []);
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int run_command(char *, sigset_t *, int, int, ...);
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int save(void *v);
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int save1(char [], int, const char *, struct ignoretab *);
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void savedeadletter(FILE *);
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int saveigfield(char *[]);
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@ -223,7 +223,7 @@ void sort(char **);
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int source(char **);
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void spreserve(void);
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void sreset(void);
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int start_command(char *, sigset_t *, int, int, char *, char *, char *);
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int start_command(char *, sigset_t *, int, int, ...);
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void statusput(struct message *, FILE *, char *);
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void stop(int);
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int stouch(int []);
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@ -235,7 +235,7 @@ makemessage(FILE *f, int omsgCount)
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size -= (omsgCount + 1) * sizeof(struct message);
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(void)fflush(f);
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(void)lseek(fileno(f), (off_t)sizeof(*message), 0);
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if (read(fileno(f), (char *)&message[omsgCount], size) != size)
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if (read(fileno(f), (void *)&message[omsgCount], size) != size)
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errx(1, "Message temporary file corrupted");
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message[msgCount].m_size = 0;
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message[msgCount].m_lines = 0;
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@ -45,7 +45,7 @@ __FBSDID("$FreeBSD$");
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* Search the passwd file for a uid. Return name on success, NULL on failure.
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*/
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char *
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getname(int uid)
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getname(uid_t uid)
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{
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struct passwd *pw;
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@ -58,7 +58,7 @@ getname(int uid)
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* Convert the passed name to a user id and return it. Return -1
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* on error.
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*/
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int
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uid_t
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getuserid(char name[])
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{
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struct passwd *pw;
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@ -38,6 +38,8 @@ __FBSDID("$FreeBSD$");
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#include "rcv.h"
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#include <sys/wait.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <stdarg.h>
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#include "extern.h"
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#define READ 0
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@ -46,22 +48,23 @@ __FBSDID("$FreeBSD$");
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struct fp {
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FILE *fp;
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int pipe;
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int pid;
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pid_t pid;
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struct fp *link;
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};
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static struct fp *fp_head;
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struct child {
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int pid;
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pid_t pid;
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char done;
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char free;
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int status;
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struct child *link;
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};
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static struct child *child;
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static struct child *findchild(int);
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static struct child *child, *child_freelist = NULL;
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static void delchild(struct child *);
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static int file_pid(FILE *);
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static pid_t file_pid(FILE *);
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static pid_t start_commandv(char *, sigset_t *, int, int, va_list);
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FILE *
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Fopen(const char *path, const char *mode)
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@ -90,6 +93,7 @@ Fdopen(int fd, const char *mode)
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int
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Fclose(FILE *fp)
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{
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unregister_file(fp);
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return (fclose(fp));
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}
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@ -99,7 +103,7 @@ Popen(char *cmd, const char *mode)
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{
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int p[2];
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int myside, hisside, fd0, fd1;
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int pid;
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pid_t pid;
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sigset_t nset;
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FILE *fp;
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@ -109,15 +113,15 @@ Popen(char *cmd, const char *mode)
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(void)fcntl(p[WRITE], F_SETFD, 1);
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if (*mode == 'r') {
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myside = p[READ];
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fd0 = -1;
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hisside = fd1 = p[WRITE];
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hisside = fd0 = fd1 = p[WRITE];
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} else {
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myside = p[WRITE];
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hisside = fd0 = p[READ];
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fd1 = -1;
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}
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(void)sigemptyset(&nset);
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if ((pid = start_command(cmd, &nset, fd0, fd1, NULL, NULL, NULL)) < 0) {
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pid = start_command(value("SHELL"), &nset, fd0, fd1, "-c", cmd, NULL);
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if (pid < 0) {
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(void)close(p[READ]);
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(void)close(p[WRITE]);
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return (NULL);
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@ -158,7 +162,7 @@ close_all_files(void)
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}
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void
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register_file(FILE *fp, int pipe, int pid)
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register_file(FILE *fp, int pipe, pid_t pid)
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{
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struct fp *fpp;
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@ -186,7 +190,7 @@ unregister_file(FILE *fp)
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/*NOTREACHED*/
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}
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int
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pid_t
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file_pid(FILE *fp)
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{
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struct fp *p;
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@ -200,29 +204,16 @@ file_pid(FILE *fp)
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/*
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* Run a command without a shell, with optional arguments and splicing
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* of stdin and stdout. The command name can be a sequence of words.
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* of stdin (-1 means none) and stdout. The command name can be a sequence
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* of words.
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* Signals must be handled by the caller.
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* "Mask" contains the signals to ignore in the new process.
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* SIGINT is enabled unless it's in the mask.
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* "nset" contains the signals to ignore in the new process.
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* SIGINT is enabled unless it's in "nset".
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*/
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/*VARARGS4*/
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int
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run_command(char *cmd, sigset_t *mask, int infd, int outfd, char *a0,
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char *a1, char *a2)
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static pid_t
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start_commandv(char *cmd, sigset_t *nset, int infd, int outfd, va_list args)
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{
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int pid;
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if ((pid = start_command(cmd, mask, infd, outfd, a0, a1, a2)) < 0)
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return (-1);
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return (wait_command(pid));
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}
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/*VARARGS4*/
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int
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start_command(char *cmd, sigset_t *mask, int infd, int outfd, char *a0,
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char *a1, char *a2)
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{
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int pid;
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pid_t pid;
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if ((pid = fork()) < 0) {
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warn("fork");
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@ -232,11 +223,10 @@ start_command(char *cmd, sigset_t *mask, int infd, int outfd, char *a0,
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char *argv[100];
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int i = getrawlist(cmd, argv, sizeof(argv) / sizeof(*argv));
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if ((argv[i++] = a0) != NULL &&
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(argv[i++] = a1) != NULL &&
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(argv[i++] = a2) != NULL)
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argv[i] = NULL;
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prepare_child(mask, infd, outfd);
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while ((argv[i++] = va_arg(args, char *)))
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;
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argv[i] = NULL;
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prepare_child(nset, infd, outfd);
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execvp(argv[0], argv);
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warn("%s", argv[0]);
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_exit(1);
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@ -244,6 +234,32 @@ start_command(char *cmd, sigset_t *mask, int infd, int outfd, char *a0,
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return (pid);
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}
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int
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run_command(char *cmd, sigset_t *nset, int infd, int outfd, ...)
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{
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pid_t pid;
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va_list args;
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va_start(args, outfd);
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pid = start_commandv(cmd, nset, infd, outfd, args);
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va_end(args);
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if (pid < 0)
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return -1;
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return wait_command(pid);
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}
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int
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start_command(char *cmd, sigset_t *nset, int infd, int outfd, ...)
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{
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va_list args;
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int r;
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va_start(args, outfd);
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r = start_commandv(cmd, nset, infd, outfd, args);
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va_end(args);
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return r;
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}
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void
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prepare_child(sigset_t *nset, int infd, int outfd)
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{
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@ -268,7 +284,7 @@ prepare_child(sigset_t *nset, int infd, int outfd)
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}
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int
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wait_command(int pid)
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wait_command(pid_t pid)
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{
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if (wait_child(pid) < 0) {
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@ -279,7 +295,7 @@ wait_command(int pid)
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}
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static struct child *
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findchild(int pid)
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findchild(pid_t pid, int dont_alloc)
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{
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struct child **cpp;
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@ -287,9 +303,16 @@ findchild(int pid)
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cpp = &(*cpp)->link)
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;
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if (*cpp == NULL) {
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*cpp = malloc(sizeof(struct child));
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if (*cpp == NULL)
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err(1, "Out of memory");
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if (dont_alloc)
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return(NULL);
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if (child_freelist) {
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*cpp = child_freelist;
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child_freelist = (*cpp)->link;
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} else {
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*cpp = malloc(sizeof(struct child));
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if (*cpp == NULL)
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err(1, "malloc");
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}
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(*cpp)->pid = pid;
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(*cpp)->done = (*cpp)->free = 0;
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(*cpp)->link = NULL;
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@ -305,19 +328,22 @@ delchild(struct child *cp)
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for (cpp = &child; *cpp != cp; cpp = &(*cpp)->link)
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;
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*cpp = cp->link;
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(void)free(cp);
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cp->link = child_freelist;
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child_freelist = cp;
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}
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/*ARGSUSED*/
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void
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sigchild(int signo __unused)
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{
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int pid;
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pid_t pid;
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int status;
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struct child *cp;
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int save_errno;
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save_errno = errno;
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while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
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cp = findchild(pid);
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cp = findchild(pid, 1);
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if (cp->free)
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delchild(cp);
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else {
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@ -325,6 +351,7 @@ sigchild(int signo __unused)
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cp->status = status;
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}
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}
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errno = save_errno;
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}
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int wait_status;
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@ -333,7 +360,7 @@ int wait_status;
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* Wait for a specific child to die.
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*/
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int
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wait_child(int pid)
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wait_child(pid_t pid)
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{
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sigset_t nset, oset;
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struct child *cp;
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@ -342,7 +369,7 @@ wait_child(int pid)
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(void)sigaddset(&nset, SIGCHLD);
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(void)sigprocmask(SIG_BLOCK, &nset, &oset);
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cp = findchild(pid);
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cp = findchild(pid, 1);
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while (!cp->done)
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(void)sigsuspend(&oset);
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@ -356,18 +383,19 @@ wait_child(int pid)
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* Mark a child as don't care.
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*/
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void
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free_child(int pid)
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free_child(pid_t pid)
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{
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struct child *cp;
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sigset_t nset, oset;
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struct child *cp = findchild(pid);
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(void)sigemptyset(&nset);
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(void)sigaddset(&nset, SIGCHLD);
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(void)sigprocmask(SIG_BLOCK, &nset, &oset);
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if (cp->done)
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delchild(cp);
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else
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cp->free = 1;
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(void)sigprocmask(SIG_BLOCK, &nset, &oset);
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if ((cp = findchild(pid, 0)) != NULL) {
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if (cp->done)
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delchild(cp);
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else
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cp->free = 1;
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}
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(void)sigprocmask(SIG_SETMASK, &oset, NULL);
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}
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