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eclair: Improve error message

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Change-Id: Ib8fe3df0a529a17a2e331b16cf396915ab6a3eb2
This commit is contained in:
Masamichi Takagi
2020-03-31 00:09:55 -04:00
parent 6cf7cebb2d
commit 79950e045e
1 changed files with 4 additions and 1 deletions
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5
executer/user/eclair.c
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@ -23,6 +23,7 @@
#include <eclair.h> #include <eclair.h>
#include <arch-eclair.h> #include <arch-eclair.h>
#include <signal.h> #include <signal.h>
#include <errno.h>
#define CPU_TID_BASE 1000000 #define CPU_TID_BASE 1000000
@ -1117,7 +1118,9 @@ static void options(int argc, char *argv[]) {
opt.mcos_fd = open(fn, O_RDONLY); opt.mcos_fd = open(fn, O_RDONLY);
if (opt.mcos_fd < 0) { if (opt.mcos_fd < 0) {
perror("open"); fprintf(stderr, "%s:%d error: "
"opening /dev/mcos%d, errno: %d\n",
__FILE__, __LINE__, opt.os_id, errno);
exit(1); exit(1);
} }
} }