From 25c997fdc8a4ee34580ae0ff0814928634898ae7 Mon Sep 17 00:00:00 2001 From: joelchrono12 Date: Thu, 12 Jan 2023 22:00:57 -0600 Subject: [PATCH] autostart --- config.def.h | 5 ++ dwm.c | 58 +++++++++++++- patches/dwm-cool-autostart-6.2.diff | 116 ++++++++++++++++++++++++++++ 3 files changed, 178 insertions(+), 1 deletion(-) create mode 100644 patches/dwm-cool-autostart-6.2.diff diff --git a/config.def.h b/config.def.h index 061ad66..62f99d9 100644 --- a/config.def.h +++ b/config.def.h @@ -18,6 +18,11 @@ static const char *colors[][3] = { [SchemeSel] = { col_gray4, col_cyan, col_cyan }, }; +static const char *const autostart[] = { + "st", NULL, + NULL /* terminate */ +}; + /* tagging */ static const char *tags[] = { "1", "2", "3", "4", "5", "6", "7", "8", "9" }; diff --git a/dwm.c b/dwm.c index e5efb6a..3feb813 100644 --- a/dwm.c +++ b/dwm.c @@ -234,6 +234,7 @@ static int xerror(Display *dpy, XErrorEvent *ee); static int xerrordummy(Display *dpy, XErrorEvent *ee); static int xerrorstart(Display *dpy, XErrorEvent *ee); static void zoom(const Arg *arg); +static void autostart_exec(void); /* variables */ static const char broken[] = "broken"; @@ -275,6 +276,34 @@ static Window root, wmcheckwin; /* compile-time check if all tags fit into an unsigned int bit array. */ struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; }; +/* dwm will keep pid's of processes from autostart array and kill them at quit */ +static pid_t *autostart_pids; +static size_t autostart_len; + +/* execute command from autostart array */ +static void +autostart_exec() { + const char *const *p; + size_t i = 0; + + /* count entries */ + for (p = autostart; *p; autostart_len++, p++) + while (*++p); + + autostart_pids = malloc(autostart_len * sizeof(pid_t)); + for (p = autostart; *p; i++, p++) { + if ((autostart_pids[i] = fork()) == 0) { + setsid(); + execvp(*p, (char *const *)p); + fprintf(stderr, "dwm: execvp %s\n", *p); + perror(" failed"); + _exit(EXIT_FAILURE); + } + /* skip arguments */ + while (*++p); + } +} + /* function implementations */ void applyrules(Client *c) @@ -1249,6 +1278,16 @@ propertynotify(XEvent *e) void quit(const Arg *arg) { + size_t i; + + /* kill child processes */ + for (i = 0; i < autostart_len; i++) { + if (0 < autostart_pids[i]) { + kill(autostart_pids[i], SIGTERM); + waitpid(autostart_pids[i], NULL, 0); + } + } + running = 0; } @@ -1631,9 +1670,25 @@ showhide(Client *c) void sigchld(int unused) { + pid_t pid; + if (signal(SIGCHLD, sigchld) == SIG_ERR) die("can't install SIGCHLD handler:"); - while (0 < waitpid(-1, NULL, WNOHANG)); + while (0 < (pid = waitpid(-1, NULL, WNOHANG))) { + pid_t *p, *lim; + + if (!(p = autostart_pids)) + continue; + lim = &p[autostart_len]; + + for (; p < lim; p++) { + if (*p == pid) { + *p = -1; + break; + } + } + + } } void @@ -2134,6 +2189,7 @@ main(int argc, char *argv[]) if (!(dpy = XOpenDisplay(NULL))) die("dwm: cannot open display"); checkotherwm(); + autostart_exec(); setup(); #ifdef __OpenBSD__ if (pledge("stdio rpath proc exec", NULL) == -1) diff --git a/patches/dwm-cool-autostart-6.2.diff b/patches/dwm-cool-autostart-6.2.diff new file mode 100644 index 0000000..84a93ea --- /dev/null +++ b/patches/dwm-cool-autostart-6.2.diff @@ -0,0 +1,116 @@ +diff --git a/config.def.h b/config.def.h +index 1c0b587..ed056a4 100644 +--- a/config.def.h ++++ b/config.def.h +@@ -18,6 +18,11 @@ static const char *colors[][3] = { + [SchemeSel] = { col_gray4, col_cyan, col_cyan }, + }; + ++static const char *const autostart[] = { ++ "st", NULL, ++ NULL /* terminate */ ++}; ++ + /* tagging */ + static const char *tags[] = { "1", "2", "3", "4", "5", "6", "7", "8", "9" }; + +diff --git a/dwm.c b/dwm.c +index 9fd0286..1facd56 100644 +--- a/dwm.c ++++ b/dwm.c +@@ -234,6 +234,7 @@ static int xerror(Display *dpy, XErrorEvent *ee); + static int xerrordummy(Display *dpy, XErrorEvent *ee); + static int xerrorstart(Display *dpy, XErrorEvent *ee); + static void zoom(const Arg *arg); ++static void autostart_exec(void); + + /* variables */ + static const char broken[] = "broken"; +@@ -275,6 +276,34 @@ static Window root, wmcheckwin; + /* compile-time check if all tags fit into an unsigned int bit array. */ + struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; }; + ++/* dwm will keep pid's of processes from autostart array and kill them at quit */ ++static pid_t *autostart_pids; ++static size_t autostart_len; ++ ++/* execute command from autostart array */ ++static void ++autostart_exec() { ++ const char *const *p; ++ size_t i = 0; ++ ++ /* count entries */ ++ for (p = autostart; *p; autostart_len++, p++) ++ while (*++p); ++ ++ autostart_pids = malloc(autostart_len * sizeof(pid_t)); ++ for (p = autostart; *p; i++, p++) { ++ if ((autostart_pids[i] = fork()) == 0) { ++ setsid(); ++ execvp(*p, (char *const *)p); ++ fprintf(stderr, "dwm: execvp %s\n", *p); ++ perror(" failed"); ++ _exit(EXIT_FAILURE); ++ } ++ /* skip arguments */ ++ while (*++p); ++ } ++} ++ + /* function implementations */ + void + applyrules(Client *c) +@@ -1249,6 +1278,16 @@ propertynotify(XEvent *e) + void + quit(const Arg *arg) + { ++ size_t i; ++ ++ /* kill child processes */ ++ for (i = 0; i < autostart_len; i++) { ++ if (0 < autostart_pids[i]) { ++ kill(autostart_pids[i], SIGTERM); ++ waitpid(autostart_pids[i], NULL, 0); ++ } ++ } ++ + running = 0; + } + +@@ -1632,9 +1671,25 @@ showhide(Client *c) + void + sigchld(int unused) + { ++ pid_t pid; ++ + if (signal(SIGCHLD, sigchld) == SIG_ERR) + die("can't install SIGCHLD handler:"); +- while (0 < waitpid(-1, NULL, WNOHANG)); ++ while (0 < (pid = waitpid(-1, NULL, WNOHANG))) { ++ pid_t *p, *lim; ++ ++ if (!(p = autostart_pids)) ++ continue; ++ lim = &p[autostart_len]; ++ ++ for (; p < lim; p++) { ++ if (*p == pid) { ++ *p = -1; ++ break; ++ } ++ } ++ ++ } + } + + void +@@ -2139,6 +2194,7 @@ main(int argc, char *argv[]) + if (!(dpy = XOpenDisplay(NULL))) + die("dwm: cannot open display"); + checkotherwm(); ++ autostart_exec(); + setup(); + #ifdef __OpenBSD__ + if (pledge("stdio rpath proc exec", NULL) == -1) +