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check an error condition in fork() and print the actual execlp error - thinglau… |
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git clone git://bitreich.org/thinglaunch |
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LICENSE |
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--- |
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commit 2c329aa6247ff532fce877debb1e80075bcbbba3 |
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parent dfd9734eae6f1adea3f1afc84cb82beee283da84 |
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Author: Hiltjo Posthuma <[email protected]> |
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Date: Sat, 8 Feb 2020 16:47:51 +0100 |
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check an error condition in fork() and print the actual execlp error |
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checks for -1 in fork() which can happen for example with resource process |
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limits. Print a clear error for fork() and execlp(). |
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Signed-off-by: Christoph Lohmann <[email protected]> |
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Diffstat: |
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M thinglaunch.c | 14 ++++++++++---- |
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1 file changed, 10 insertions(+), 4 deletions(-) |
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--- |
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diff --git a/thinglaunch.c b/thinglaunch.c |
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@@ -449,6 +449,7 @@ void |
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execcmd(void) |
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{ |
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char *shell; |
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+ pid_t pid; |
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XDestroyWindow(dpy, win); |
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@@ -463,18 +464,23 @@ execcmd(void) |
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exit(0); |
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} |
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- if (fork()) |
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- exit(0); |
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+ switch ((pid = fork())) { |
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+ case -1: |
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+ die("fork: %s\n", strerror(errno)); |
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+ case 0: |
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+ break; |
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+ default: |
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+ _exit(0); |
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+ } |
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shell = getenv("SHELL"); |
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if (!shell) |
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shell = "/bin/sh"; |
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execlp(shell, basename(shell), "-c", cbuf, (char *)NULL); |
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- die("aiee, after exec"); |
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+ die("execlp: %s\n", strerror(errno)); |
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} |
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- |
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void |
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die(char *errstr, ...) |
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{ |
