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commit ab7d3fba38ec3bfe6ce6ba223106c05fdd00331d
parent 19a73c3706a1b4fbfe8dfe03f570d4a6dc468186
Author: sin <sin@2f30.org>
Date:   Thu, 22 Aug 2019 16:04:39 +0100

Only check status field if waitpid() did not fail

Diffstat:
Mspawn.c | 8+++++---
1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/spawn.c b/spawn.c @@ -13,7 +13,7 @@ int spawnvp(char *dir, char *file, char *argv[]) { pid_t pid; - int status; + int status, r; pid = fork(); switch (pid) { @@ -25,8 +25,10 @@ spawnvp(char *dir, char *file, char *argv[]) execvp(file, argv); _exit(1); default: - while (waitpid(pid, &status, 0) == -1 && errno == EINTR) - ; + while ((r = waitpid(pid, &status, 0)) == -1 && errno == EINTR) + continue; + if (r == -1) + return -1; if (WIFEXITED(status) && WEXITSTATUS(status) != 0) return -1; }