dwmblocks

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commit ff41f8e71ec6fafdcc8fa25367d5ad01dbdd8519
parent a0ebcc3f5448204a9414691fea0f496404f81560
Author: Luke Smith <luke@lukesmith.xyz>
Date:   Mon,  4 May 2020 15:27:46 -0400

statuscmd programs forked

Diffstat:
Mdwmblocks.c | 44+++++++++++++++++++++++++-------------------
Apatches/dwmblocks-statuscmd-fork.diff | 77+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 102 insertions(+), 19 deletions(-)

diff --git a/dwmblocks.c b/dwmblocks.c @@ -36,8 +36,6 @@ static int screen; static Window root; static char statusbar[LENGTH(blocks)][CMDLENGTH] = {0}; static char statusstr[2][256]; -static char exportstring[CMDLENGTH + 22] = "export BLOCK_BUTTON=-;"; -static int button = 0; static int statusContinue = 1; static void (*writestatus) () = setroot; @@ -71,21 +69,8 @@ void getcmd(const Block *block, char *output) output++; } strcpy(output, block->icon); - char* cmd; - FILE *cmdf; - if (button) - { - cmd = strcat(exportstring, block->command); - cmd[20] = '0' + button; - button = 0; - cmdf = popen(cmd,"r"); - cmd[22] = '\0'; - } - else - { - cmd = block->command; - cmdf = popen(cmd,"r"); - } + char *cmd = block->command; + FILE *cmdf = popen(cmd,"r"); if (!cmdf) return; char c; @@ -136,6 +121,7 @@ void setupsignals() sa.sa_sigaction = buttonhandler; sa.sa_flags = SA_SIGINFO; sigaction(SIGUSR1, &sa, NULL); + signal(SIGCHLD, SIG_IGN); } #endif @@ -198,9 +184,29 @@ void sighandler(int signum) void buttonhandler(int sig, siginfo_t *si, void *ucontext) { - button = si->si_value.sival_int & 0xff; - getsigcmds(si->si_value.sival_int >> 8); + int button = si->si_value.sival_int & 0xff; + sig = si->si_value.sival_int >> 8; + getsigcmds(sig); writestatus(); + if (fork() == 0) + { + static char exportstring[CMDLENGTH + 22] = "export BLOCK_BUTTON=-;"; + const Block *current; + int i; + for (i = 0; i < LENGTH(blocks); i++) + { + current = blocks + i; + if (current->signal == sig) + break; + } + char *cmd = strcat(exportstring, blocks[i].command); + cmd[20] = '0' + button; + char *command[] = { "/bin/sh", "-c", cmd, NULL }; + setsid(); + execvp(command[0], command); + exit(EXIT_SUCCESS); + cmd[22] = '\0'; + } } #endif diff --git a/patches/dwmblocks-statuscmd-fork.diff b/patches/dwmblocks-statuscmd-fork.diff @@ -0,0 +1,77 @@ +diff --git a/dwmblocks.c b/dwmblocks.c +index 7d7a564..e2c5dd0 100644 +--- a/dwmblocks.c ++++ b/dwmblocks.c +@@ -34,8 +34,6 @@ static int screen; + static Window root; + static char statusbar[LENGTH(blocks)][CMDLENGTH] = {0}; + static char statusstr[2][256]; +-static char exportstring[CMDLENGTH + 22] = "export BLOCK_BUTTON=-;"; +-static int button = 0; + static int statusContinue = 1; + static void (*writestatus) () = setroot; + +@@ -55,21 +53,8 @@ void getcmd(const Block *block, char *output) + output[0] = block->signal; + output++; + } +- char* cmd; +- FILE *cmdf; +- if (button) +- { +- cmd = strcat(exportstring, block->command); +- cmd[20] = '0' + button; +- button = 0; +- cmdf = popen(cmd,"r"); +- cmd[22] = '\0'; +- } +- else +- { +- cmd = block->command; +- cmdf = popen(cmd,"r"); +- } ++ char *cmd = block->command; ++ FILE *cmdf = popen(cmd,"r"); + if (!cmdf) + return; + fgets(output, CMDLENGTH, cmdf); +@@ -117,6 +102,7 @@ void setupsignals() + sa.sa_sigaction = buttonhandler; + sa.sa_flags = SA_SIGINFO; + sigaction(SIGUSR1, &sa, NULL); ++ signal(SIGCHLD, SIG_IGN); + + } + #endif +@@ -179,9 +165,29 @@ void sighandler(int signum) + + void buttonhandler(int sig, siginfo_t *si, void *ucontext) + { +- button = si->si_value.sival_int & 0xff; +- getsigcmds(si->si_value.sival_int >> 8); ++ int button = si->si_value.sival_int & 0xff; ++ sig = si->si_value.sival_int >> 8; ++ getsigcmds(sig); + writestatus(); ++ if (fork() == 0) ++ { ++ static char exportstring[CMDLENGTH + 22] = "export BLOCK_BUTTON=-;"; ++ const Block *current; ++ int i; ++ for (i = 0; i < LENGTH(blocks); i++) ++ { ++ current = blocks + i; ++ if (current->signal == sig) ++ break; ++ } ++ char *cmd = strcat(exportstring, blocks[i].command); ++ cmd[20] = '0' + button; ++ char *command[] = { "/bin/sh", "-c", cmd, NULL }; ++ setsid(); ++ execvp(command[0], command); ++ exit(EXIT_SUCCESS); ++ cmd[22] = '\0'; ++ } + } + + #endif