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git.proxmox.com Git - qemu.git/blob - os-posix.c
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2010 Red Hat, Inc.
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
29 #include <sys/types.h>
33 /* Needed early for CONFIG_BSD etc. */
34 #include "config-host.h"
36 #include "net/slirp.h"
37 #include "qemu-options.h"
39 void os_setup_early_signal_handling(void)
42 sigfillset(&act
.sa_mask
);
44 act
.sa_handler
= SIG_IGN
;
45 sigaction(SIGPIPE
, &act
, NULL
);
48 static void termsig_handler(int signal
)
50 qemu_system_shutdown_request();
53 static void sigchld_handler(int signal
)
55 waitpid(-1, NULL
, WNOHANG
);
58 void os_setup_signal_handling(void)
62 memset(&act
, 0, sizeof(act
));
63 act
.sa_handler
= termsig_handler
;
64 sigaction(SIGINT
, &act
, NULL
);
65 sigaction(SIGHUP
, &act
, NULL
);
66 sigaction(SIGTERM
, &act
, NULL
);
68 act
.sa_handler
= sigchld_handler
;
69 act
.sa_flags
= SA_NOCLDSTOP
;
70 sigaction(SIGCHLD
, &act
, NULL
);
73 /* Find a likely location for support files using the location of the binary.
74 For installed binaries this will be "$bindir/../share/qemu". When
75 running from the build tree this will be "$bindir/../pc-bios". */
76 #define SHARE_SUFFIX "/share/qemu"
77 #define BUILD_SUFFIX "/pc-bios"
78 char *os_find_datadir(const char *argv0
)
86 #if defined(__linux__)
89 len
= readlink("/proc/self/exe", buf
, sizeof(buf
) - 1);
95 #elif defined(__FreeBSD__)
97 static int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PATHNAME
, -1};
98 size_t len
= sizeof(buf
) - 1;
101 if (!sysctl(mib
, sizeof(mib
)/sizeof(*mib
), buf
, &len
, NULL
, 0) &&
103 buf
[sizeof(buf
) - 1] = '\0';
108 /* If we don't have any way of figuring out the actual executable
109 location then try argv[0]. */
111 p
= realpath(argv0
, buf
);
119 max_len
= strlen(dir
) +
120 MAX(strlen(SHARE_SUFFIX
), strlen(BUILD_SUFFIX
)) + 1;
121 res
= qemu_mallocz(max_len
);
122 snprintf(res
, max_len
, "%s%s", dir
, SHARE_SUFFIX
);
123 if (access(res
, R_OK
)) {
124 snprintf(res
, max_len
, "%s%s", dir
, BUILD_SUFFIX
);
125 if (access(res
, R_OK
)) {
137 * Parse OS specific command line options.
138 * return 0 if option handled, -1 otherwise
140 void os_parse_cmd_args(int index
, const char *optarg
)
144 case QEMU_OPTION_smb
:
145 if (net_slirp_smb(optarg
) < 0)