1volmgt_check(3VOLMGT) Volume Management Library Functionsvolmgt_check(3VOLMGT)
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6 volmgt_check - have Volume Management check for media
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9 cc [ flag... ] file... -lvolmgt [ library ... ]
10 #include <volmgt.h>
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12 int volmgt_check(char *pathname);
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16 This function is obsolete. The management of removable media by the
17 Volume Management feature, including vold, has been replaced by soft‐
18 ware that supports the Hardware Abstraction Layer (HAL). Programmatic
19 support for HAL is through the HAL APIs, which are documented on the
20 HAL web site. See hal(5). The return value of this function is unde‐
21 fined.
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24 This routine asks volume Management to check the specified pathname and
25 determine if new media has been inserted in that drive.
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28 If a null pointer is passed in, then Volume Management will check each
29 device it is managing that can be checked.
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32 If new media is found, volmgt_check() tells volume management to initi‐
33 ate appropriate actions.
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36 The return from this function is undefined.
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39 This routine can fail, returning 0, if a stat(2) or open(2) of the sup‐
40 plied pathname fails, or if any of the following is true:
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42 ENXIO volume management is not running.
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45 EINTR An interrupt signal was detected while checking for media.
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49 Example 1 Checking If Any New Media Is Inserted
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52 To check if any drive managed by volume management has any new media
53 inserted in it:
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56 if (volmgt_check(NULL)) {
57 (void) printf("Volume management found media\n");
58 }
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62 This would also request volume management to take whatever action was
63 appropriate for the new media.
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67 See attributes(5) for descriptions of the following attributes:
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72 ┌─────────────────────────────┬─────────────────────────────┐
73 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
74 ├─────────────────────────────┼─────────────────────────────┤
75 │MT-Level │MT-Safe │
76 └─────────────────────────────┴─────────────────────────────┘
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79 volcheck(1), open(2), stat(2), volmgt_inuse(3VOLMGT), volmgt_run‐
80 ning(3VOLMGT), attributes(5), hal(5)
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83 Since volmgt_check() returns 0 for two different cases (both when no
84 media is found, and when an error occurs), it is up to the user to
85 check errno to differentiate the two, and to ensure that volume manage‐
86 ment is running.
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90SunOS 5.11 8 Mar 2007 volmgt_check(3VOLMGT)